Domestic violence in the perinatal period is associated with adverse obstetric outcomes, but evidence is limited on its association with perinatal mental disorders. We aimed to estimate the prevalence and odds of having experienced domestic violence among women with antenatal and postnatal mental disorders (depression and anxiety disorders including post-traumatic stress disorder [PTSD], eating disorders, and psychoses).
Methods and Findings
We conducted a systematic review and meta-analysis (PROSPERO reference CRD42012002048). Data sources included searches of electronic databases (to 15 February 2013), hand searches, citation tracking, update of a review on victimisation and mental disorder, and expert recommendations. Included studies were peer-reviewed experimental or observational studies that reported on women aged 16 y or older, that assessed the prevalence and/or odds of having experienced domestic violence, and that assessed symptoms of perinatal mental disorder using a validated instrument. Two reviewers screened 1,125 full-text papers, extracted data, and independently appraised study quality. Odds ratios were pooled using meta-analysis.
Sixty-seven papers were included. Pooled estimates from longitudinal studies suggest a 3-fold increase in the odds of high levels of depressive symptoms in the postnatal period after having experienced partner violence during pregnancy (odds ratio 3.1, 95% CI 2.7–3.6). Increased odds of having experienced domestic violence among women with high levels of depressive, anxiety, and PTSD symptoms in the antenatal and postnatal periods were consistently reported in cross-sectional studies. No studies were identified on eating disorders or puerperal psychosis. Analyses were limited because of study heterogeneity and lack of data on baseline symptoms, preventing clear findings on causal directionality.
High levels of symptoms of perinatal depression, anxiety, and PTSD are significantly associated with having experienced domestic violence. High-quality evidence is now needed on how maternity and mental health services should address domestic violence and improve health outcomes for women and their infants in the perinatal period.
Please see later in the article for the Editors' Summary
Domestic violence—physical, sexual, or emotional abuse by an intimate partner or family member—is a major public health problem and although more common in women, can also affect men. Due to the nature of the problem, it is difficult to collect accurate figures on the scale of domestic violence, but a study by the World Health Organization in ten countries found that 15%–71% of women aged 15–49 years reported physical and/or sexual violence by an intimate partner at some point in their lives. Women experiencing domestic violence have significant short- and long-term health problems, particularly regarding their mental health: experience of domestic violence can lead to a range of mental health disorders such as depression, psychosis, eating disorders, and even suicide attempts.
Why Was This Study Done?
As perinatal mental health disorders are among the commonest health problems in pregnancy and the postpartum period, and given the rate of domestic violence during pregnancy (previous studies have suggested a domestic violence prevalence of 4%–8% during pregnancy and the postnatal period), it is plausible that there may be a link between perinatal mental health disorders and having experienced domestic violence. Indeed, previous reviews have suggested the existence of such an association but were limited by the small number of included studies and focused on depression only, rather than the full range of antenatal and postnatal mental health disorders. So in this study the researchers systematically reviewed published studies to provide more robust estimates of the prevalence of having experienced domestic violence among women with antenatal and postnatal mental health disorders; the researchers also used a meta-analysis to estimate the odds (chance) of having experienced domestic violence among women with antenatal and postnatal mental health disorders.
What Did the Researchers Do and Find?
The researchers searched multiple databases and hand searched three relevant journals using key search terms to identify all types of relevant studies. Using specific criteria, the researchers retrieved and assessed over 1,000 full papers, of which 67 met the criteria for their systematic review. The researchers assessed the quality of each selected study and included only those studies that used validated diagnostic instruments and screening tools to assess mental health disorders in their calculations of the pooled (combined) odds ratio (OR) through meta-analysis.
Using these methods, in cross-sectional studies (studies conducted at one point in time), the researchers found that women with probable depression in the antenatal period reported a high prevalence and increased odds of having experienced partner violence during their lifetime (OR = 3), during the past year (OR = 2.8), and during pregnancy (OR = 5). The results were similar for the postnatal period. The evidence was less robust for anxiety disorders: among women with probable anxiety in the antenatal period, the researchers found an OR of 2.9 of having experienced lifetime partner violence. The odds were less in the postnatal period (OR = 1.4) In their analysis of longitudinal studies (follow-up studies over a period of time), the researchers found an increased odds of probable postnatal depression both among women who reported having ever experienced partner violence in their lifetime (OR = 2.9) and among women who reported having experienced partner violence during pregnancy (OR = 3.1). The researchers also found a combined prevalence estimate of 12.7% for probable depression during the postnatal period following experiences of partner violence during pregnancy. Because of limited data, the researchers could not calculate an OR of the association between probable antenatal depression and later experiences of partner violence.
What Do These Findings Mean?
These findings suggest that women with high levels of symptoms of perinatal mental health disorders—antenatal and postnatal anxiety, depression, and post-traumatic stress disorder—have a high prevalence and increased odds of having experienced domestic violence both over their lifetime and during pregnancy. However, these findings cannot prove causality, they fail to show a two-way association (that is, perinatal mental health disorders leading to subsequent domestic violence), and no information on other perinatal mental disorders, such as eating disorders and puerperal psychosis, was available. The variation of the quality of the included studies also limits the results, highlighting the need for high-quality data to suggest how maternity and mental health services could address domestic violence and improve health outcomes for women and their infants in the future. Nevertheless, this study emphasizes the importance of identifying and responding to possible domestic violence among women attending antenatal and mental health services.
Please access these websites via the online version of this summary at http://dx.doi.org/10.1371/journal.pmed.1001452.
Citation: Howard LM, Oram S, Galley H, Trevillion K, Feder G (2013) Domestic Violence and Perinatal Mental Disorders: A Systematic Review and Meta-Analysis. PLoS Med 10(5): e1001452. doi:10.1371/journal.pmed.1001452
Academic Editor: Alexander C. Tsai, Massachusetts General Hospital, United States of America
Received: December 3, 2012; Accepted: April 10, 2013; Published: May 28, 2013
Copyright: © 2013 Howard et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Funding: LMH, SO, KT, and GF receive support from the NIHR Programme Grants for Applied Research scheme (RP-PG-0108-10084). LMH also receives salary support from the National Institute for Health Research (NIHR) Mental Health Biomedical Research Centre at South London and Maudsley NHS Foundation Trust and King's College London. This paper presents independent research funded by the National Institute for Health Research (NIHR) under its Programme Grants for Applied Research scheme (RP-PG-0108-10084). The views expressed in this publication are those of the author(s) and not necessarily those of the NHS, the NIHR, or the Department of Health. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. The corresponding author had full access to all the data in the study and had final responsibility for the decision to submit for publication.
Competing interests: LMH and GF are members of the WHO Guideline Development Group on Policy and Practice Guidelines for responding to Violence Against Women and the NICE/SCIE Guideline Development Group on Preventing and Reducing Domestic Violence. LMH has also been appointed as chair of the NICE guideline update on antenatal and postnatal mental health. The other authors declare no completing interests exist.
Abbreviations: OR, odds ratio; PAF, population attributable fraction; PTSD, post-traumatic stress disorder
Perinatal mental disorders are among the commonest health problems associated with pregnancy and the postpartum period. Antenatal disorders (including depression and anxiety disorders, eating disorders, and psychoses) are associated with adverse effects on the fetus including low birth weight and pre-term delivery –, perinatal and infant death –, and postnatal psychopathology –, with the last associated with subsequent behavioural/emotional problems in the child and adolescent . Risk factors for most perinatal mental disorders are generally similar to those for mental disorders outside the perinatal period and include a family and personal history of mental disorders ,.
Previous research has found an association between mental disorder and being a victim of domestic violence (i.e., intimate partner violence and/or violence perpetrated by another family member) that is not diagnostically specific; associations have been found for common mental disorders, eating disorders, and psychosis and domestic violence in non-perinatal populations ,. The prevalence of domestic violence during pregnancy in high-income settings ranges from 4% to 8% in the majority of studies, equating to approximately 152,000 to 324,000 pregnant women experiencing abuse each year in the US ,, in low- and middle-income countries the prevalence can be higher . There is strong evidence that domestic violence increases the risk of low birth weight, and growing evidence of an association with pre-term labour, miscarriage, fetal death , and subsequent child behavioural problems ; domestic violence can also be a cause of maternal death –. The recent UK Confidential Enquiry into Maternal Deaths highlighted that domestic-violence-related deaths were perpetrated by both in-laws and partners .
Recent reviews have indicated a possible association between perinatal mental disorder and having experienced domestic violence, but these reviews have the following limitations: they identified only a limited number of relevant studies (<10); they focused predominantly on depression and not the full range of antenatal and postnatal mental disorders; they did not disaggregate findings according to whether violence was reported during pregnancy, during the past year, or over the lifetime; and they did not restrict their analyses to studies that used diagnostic or validated screening instruments to assess mental disorder –. Our systematic review aimed to address these limitations to provide more robust estimates of the following: (a) the prevalence of having experienced domestic violence (lifetime, past year, and during pregnancy) among women with antenatal and postnatal mental disorders (depression and anxiety disorders including post-traumatic stress disorder [PTSD], eating disorders, and psychoses including puerperal psychosis), (b) the odds of having experienced domestic violence (lifetime, past year, and during pregnancy) among women with antenatal and postnatal mental disorders (depression and anxiety disorders, eating disorders, and psychoses including puerperal psychosis), and (c) the odds of incident antenatal and postnatal mental disorders subsequent to having experienced domestic violence and the odds of experiencing domestic violence in women with pre-existing antenatal or postnatal disorders.
This review followed MOOSE and PRISMA guidelines (see Text S1), and the protocol (see Text S2) is registered with the PROSPERO database of systematic reviews (http://www.crd.york.ac.uk/prospero; registration number CRD42011001281) ,. The search strategy comprised an electronic search of bibliographic databases, an update of a recent systematic review on the victimisation of people with mental disorders , hand searches of three key journals (Trauma Violence and Abuse, Journal of Traumatic Stress, and Violence Against Women), backwards and forwards citation tracking, and expert recommendations. Medical Subject Headings (MeSH) and text words were used to search 18 electronic databases, from their dates of inception up to 31 March 2011 (see Box 1 for the list of databases searched). Additional searches of Medline, Embase, and PsycINFO, and hand searches of Trauma Violence and Abuse, Journal of Traumatic Stress, and Violence Against Women, were conducted for the period 1 January 2011 to 15 February 2013. Terms for domestic violence were adapted from Cochrane protocols and peer-reviewed literature reviews, and terms for mental disorders were adapted from NICE guidelines –. The search strategy for Medline, Embase, and PsycINFO is shown in Text S3. When updating the victimisation review, we used the author's original search terms to search databases from September 2007 (the upper limit of the original review) to 31 March 2011. No language restrictions were used.
Biomedical databases: Academic Search Complete, BNI (British Nursing Index), CINAHL (Cumulative Index to Nursing and Allied Health Literature), Cochrane, Embase, HMIC (Health Management Information Consortium), Medline, Maternity and Infant Care, PsycINFO, Science Direct, Web of Science (including SCI, SSCI, A&HCI, CPCI-S, CPCI-SSH).
Social sciences databases: Applied Social Sciences Index and Abstracts, International Bibliography of the Social Sciences, JSTOR, Sociological Abstracts.
Theses and dissertations: DART-Europe E-Theses Portal, EThOS, Networked Digital Library of Theses and Dissertations
Studies were eligible for inclusion if they (a) included women who were 16 y or older and were assessed as having a perinatal mental disorder using a validated diagnostic instrument or screening instrument; (b) presented the results of peer-reviewed research based on experimental studies (e.g., randomised controlled trials, non-randomised controlled trials, parallel group studies), before-and-after studies, interrupted time series studies, cohort studies, case-control studies, or cross-sectional studies; and (c) measured the prevalence or odds of having experienced domestic violence during the lifetime, during the past year, (i.e., 12 mo prior to interview regardless of whether this was in the antenatal or postnatal period), or during pregnancy. When we identified multiple eligible papers from the same study, only the paper reporting the largest sample size was included.
Data Extraction and Quality Appraisal
Two reviewers (S. O. and K. T.) screened the downloaded titles and abstracts against the inclusion criteria; if it was unclear whether a reference met the inclusion criteria, it was taken forward to the next stage of screening. Two reviewers (S. O. and K. T.) assessed the full texts of potentially eligible studies. If studies collected data on the prevalence and/or odds of domestic violence but did not report it, authors were contacted for further information.
Data from included papers were extracted into an electronic database by two reviewers (S. O. and H. G.). Extracted data included details of the study design, sample characteristics, measures of mental disorder and domestic violence, and the prevalence and odds of domestic violence victimisation. Details on the type of violence and chronicity of mental disorders were extracted where reported.
The quality of included studies was independently appraised by two reviewers (S. O. and H. G.) using criteria adapted from validated tools . Reviewers compared scores and resolved disagreements before allocating a final appraisal score. The quality appraisal checklist (see Text S4) included items assessing study selection and measurement biases; studies were categorised as high quality if they scored ≥50% on questions pertaining to selection bias.
Prevalence, odds ratios (ORs), and 95% confidence intervals of having experienced domestic violence were calculated by type of perinatal mental disorder. If a study measured one disorder only (e.g., depression), the control group for the calculation of ORs was women without that disorder. If a study measured multiple disorders (e.g., depression and anxiety), the control group was women without those disorders. This reduced the risk of control groups including women with mental disorders, and improved consistency where studies contributed data for several mental disorders. Prevalence and unadjusted ORs were also calculated separately by period of violence experienced (lifetime, past year, and during pregnancy). We report prevalence estimates and ORs for having experienced “any violence” (i.e., any physical, sexual, or psychological violence). There were limited disaggregated data providing the prevalence and odds of having experienced physical, sexual, and psychological violence separately; these are reported in Table S1 (cross-sectional studies) and Table S2 (longitudinal studies).When analysing longitudinal data, we examined both the association between recent experiences of domestic violence at baseline and mental disorder identified at follow-up, and the association between mental disorder at baseline and domestic violence experienced during the follow-up period.
Pooled unadjusted OR estimates (with corresponding 95% confidence intervals) were calculated using random effects meta-analysis if data were available from three or more studies. We examined the influence of individual studies on summary effect estimates by conducting influence analyses, which compute summary estimates omitting one study at a time. We aimed to assess the risk of small study bias with funnel plots (see Figure S1) . Because of the small number of eligible studies, statistical tests for funnel plot asymmetry were not appropriate, and we were confined to visual inspection of the plots. Heterogeneity among studies was estimated using the I2 statistic. Pooled population attributable fraction (PAF) estimates were calculated using data from longitudinal studies, based on meta-analysis-derived summary relative risks. All analyses were conducted in Stata 11 .
Only studies that assessed mental disorders using either validated diagnostic instruments or validated screening instruments with the recommended cutoff scores were included in median prevalence and pooled OR calculations. Studies that used the Patient Health Questionnaire were excluded from these calculations because of the low sensitivity and specificity of the Patient Health Questionnaire in perinatal populations . Where sufficient data were available, pooled ORs were also calculated that included only studies that used the Edinburgh Postnatal Depression Scale to measure probable depression (high levels of depressive symptoms), as this instrument is the most widely used internationally and has been validated in 32 languages .
The study selection process is presented in Figure 1. The literature search yielded 30,563 unique references, of which 29,469 were excluded following title and abstract screening. Of the 1,184 references that met, or potentially met, the inclusion criteria, 59 could not be located. Thus, 1,125 full papers were retrieved and assessed. Of these, 67 papers were included in the review following full-text screening; 55 were identified from searches of electronic databases, two from citation tracking, three from hand searching, and seven from expert recommendations.
Figure 1. Flow diagram of screened and included papers.doi:10.1371/journal.pmed.1001452.g001
Key Features of Included Studies
A summary of included studies is shown in Table 1 ,–. Individual details of all included studies, including outcomes and quality appraisal scores, are reported by disorder in Table S1 (cross-sectional data) and Table S2 (longitudinal data). Forty studies were categorised as high quality. Unless otherwise stated, the omission of individual studies during sensitivity analyses did not materially affect pooled ORs. Pooled ORs calculated using only studies that used the Edinburgh Postnatal Depression Scale were also not materially different to the pooled ORs calculated using all eligible studies, unless otherwise stated.
Table 1. Summary of included studies (n = 67).doi:10.1371/journal.pmed.1001452.t001
Findings from Cross-Sectional Data
As shown in Table 2, median prevalence and pooled ORs showed that women with probable depression in the antenatal period reported a high prevalence and increased odds of having experienced intimate partner violence during the lifetime (OR 3.0, 95% CI 2.3–4.0, I2 51.1%), during the past year (OR 2.8, 95% CI 1.5–5.3, I2 75.3%), and during pregnancy (OR 5.0, 95% CI 4.0–6.2, I2 23.7%) (see also Figures 2–4). The heterogeneity for having experienced intimate partner violence during the lifetime was substantially reduced when omitting two studies that used the Hospital Anxiety and Depression Scale (OR 3.3, 95% CI 2.7–4.0, I2 11.2%). Median prevalence and pooled ORs also showed that women with probable depression in the postnatal period reported a high prevalence and increased odds of having experienced intimate partner violence during the lifetime (OR 2.9, 95% CI 1.8–4.8, I2 77.6%), during the past year (OR 2.8, 95% CI 1.7–4.6, I2 79.2%), and during pregnancy (OR 4.4, 95% CI 2.9–6.5, I2 22.4%) (see also Figures 5–7).
Figure 2. Meta-analysis of the association between antenatal depression and any lifetime domestic violence (cross-sectional studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g002
Figure 3. Meta-analysis of the association between antenatal depression and any past year partner violence (cross-sectional studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g003
Figure 4. Meta-analysis of the association between antenatal depression and partner violence during pregnancy (cross-sectional studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g004
Figure 5. Meta-analysis of the association between postnatal depression and any lifetime partner violence (cross-sectional studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g005
Figure 6. Meta-analysis of the association between postnatal depression and any past year partner violence (cross-sectional studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g006
Figure 7. Meta-analysis of the association between postnatal depression and partner violence during pregnancy (cross-sectional studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g007
Table 2. Summary of findings from cross-sectional studies.doi:10.1371/journal.pmed.1001452.t002
Two studies measured experiences of family violence (including violence from a partner) among women with probable depression in the antenatal period, reporting prevalence estimates of 35.2% and 38.9% ,. ORs could be calculated for only one study, which reported an increased odds of ever having experienced domestic violence (including from a partner) among women with probable depression in the antenatal period (OR 2.6, 95% CI 1.3–5.2) . One study measured experiences of domestic violence (including violence from a partner) among women with probable depression in the postnatal period and found increased odds of having experienced past-year violence compared to women without probable depression (OR 2.9, 95% CI 1.5–5.7) .
Data were limited on the prevalence and odds of having experienced domestic violence among women with probable anxiety disorder or PTSD in either the antenatal or postnatal period. The prevalence of having experienced intimate partner violence during the lifetime was reported by two studies to be 27.8% and 29.8% among women with probable anxiety in the antenatal period ,, and by one study to be 27.6% for women with diagnosed anxiety disorder in the postnatal period . Individual studies reported non-significant increases in the odds of having experienced lifetime partner violence among women with probable anxiety in the antenatal period (OR 2.9, 95% CI 0.9–8.4)  and among women with anxiety disorder at 12 mo postpartum (OR 1.4, 95% CI 1.0–2.1) , compared to women with no anxiety . Studies suggested that women with probable PTSD in the antenatal period had an increased risk of having experienced intimate partner violence during the lifetime (OR 6.4, 95% CI 1.7–26.4) , during the past year (OR 4.6, 95% CI 2.5–8.5) ,, and during pregnancy 6.0 (95% CI 1.4–29.2) ,. Only one study measured experiences of intimate partner violence among women with PTSD in the postnatal period: Cerulli and colleagues reported increased odds of having experienced past-year intimate partner violence among women with PTSD (OR 4.6, 95% CI 1.1–18.4) and a prevalence of 41.2% .
One study measured having ever experienced domestic violence (including violence from a partner) among women with and without probable anxiety in the antenatal period . The study, conducted in Pakistan, found no significant difference in the odds of having ever experienced violence between women with and without probable anxiety (OR 0.5, 95% CI 0.2–1.4); this lack of difference may be due to the very high levels of violence reported among women both with probable anxiety (76.4%) and without (86.0%) . No studies measured violence perpetrated by family members among women with probable or diagnosed PTSD in the antenatal or postnatal period.
No studies were found for other disorders in the antenatal or postnatal period.
Findings from Longitudinal Data
Longitudinal data were collected by 16 studies. Twelve studies assessed the association between antenatal violence and later probable depression. Pooled ORs found increased odds of probable postnatal depression among women who reported at baseline having ever experienced intimate partner violence (OR 2.9, 95% CI 2.0–4.0, I2 0.0%) and among women who reported at baseline having experienced intimate partner violence during pregnancy (OR 3.1, 95% CI 2.7–3.6, I2 0.0%) (see also Figures 8 and 9). Neither estimate could be adjusted for antenatal depression because of a lack of data. The pooled PAF estimate for probable depression during the postnatal period following experiences of intimate partner violence during pregnancy was 12.7% (95% CI 11.8%–13.6%).
Figure 8. Meta-analysis of the association between any lifetime partner violence and postnatal depression (cohort studies).
ES, effect size.doi:10.1371/journal.pmed.1001452.g008
Figure 9. Meta-analysis of the association between any partner violence during pregnancy and postnatal depression (cohort studies).doi:10.1371/journal.pmed.1001452.g009
Five studies assessed the association between probable antenatal depression and later experiences of intimate partner violence. Pooled ORs could not be calculated because of insufficient data, but individual studies reported that the odds of having experienced intimate partner violence during or up to a year after pregnancy were between two and five times higher among women with probable depression in the antenatal period compared to women without probable depression (not adjusted for baseline violence). One cohort study reported increased odds of lifetime intimate partner violence reported at 4 mo postpartum among women who had probable antenatal anxiety at baseline (OR 1.7, 95% CI 1.1–2.7); no longitudinal data were available for other disorders.
This systematic review and meta-analysis found that high levels of symptoms of all types of perinatal mental disorders included in studies to date (i.e., antenatal and postnatal anxiety, depression, and PTSD) were associated with having experienced domestic violence, although causality cannot be inferred. Pooled estimates from cross-sectional studies show that women with probable depression in the antenatal and postnatal periods have 3- to 5-fold increased unadjusted odds of having experienced domestic violence over the adulthood lifetime, during the past year, and during pregnancy, with correspondingly high prevalence estimates.
Meta-analysis of data from longitudinal studies suggests that women who experience domestic violence during pregnancy have 3-fold increased unadjusted odds of probable depression in the postnatal period. The pooled PAF of 12.7% (95% CI 11.8%–13.6%) calculated from these studies suggests that, if the association between domestic violence during pregnancy and postnatal depression are causal, experiences of domestic violence during pregnancy may contribute to the burden of postnatal mental disorder, and underlines the importance of domestic violence as a public health problem. Individual longitudinal studies also suggest that women with probable depression in the antenatal period have 3- to 5-fold increased odds of experiencing domestic violence during or up to a year after pregnancy. Although causality cannot be inferred, these findings suggest that a two-way association between experiences of domestic violence and probable depression in the antenatal and postnatal periods is likely, in which symptoms of depression may increase women's vulnerability to domestic violence, and having experienced domestic violence can increase the odds of probable depression in the antenatal and postnatal period. Insufficient data were available for other perinatal mental disorders to draw conclusions about the direction of causality for associations.
To our knowledge, this systematic review is the first to search for studies reporting on the prevalence and odds of having experienced domestic violence across the full range of antenatal and postnatal mental disorders. There are fewer studies on domestic violence and probable anxiety disorders than depression, but the review found, for the first time, consistent evidence of a high prevalence and increased odds of having experienced domestic violence among women with anxiety and PTSD in the antenatal and postnatal periods. We did not find any studies reporting the relationship between having experienced domestic violence and eating disorders or psychotic disorders, including puerperal psychosis, despite studies outside the perinatal period reporting an increased odds of having experienced domestic violence in women with eating disorders , and anecdotal reports of domestic violence associated with puerperal psychosis . Further research is clearly needed for these diagnostic categories.
Most studies were carried out in high-income settings; findings were similar in low-income settings, but one study also reported that the odds of psychological distress associated with having experienced domestic violence was higher if the baby was a girl rather than a boy . Risks are therefore likely to be modified by the cultural context of the pregnancy and postpartum period; this may be particularly the case where parents or parents-in-law play a major role in the postpartum period .
Strengths and Limitations
Strengths of this review include restricting primary studies to those that used diagnostic instruments or validated screening instruments with their recommended cutoff scores to assess mental disorders. The comprehensive search strategy over multiple databases enabled the identification and synthesis of a large number of studies of several diagnostic categories, including depression, anxiety disorders, and PTSD. The review highlights critical gaps in the literature, including few longitudinal studies, few studies reporting on violence perpetrated by family members, and no studies investigating the possible relationship between domestic violence and puerperal psychosis.
There was high heterogeneity in pooled estimates of the association between having experienced past-year intimate partner violence and probable depression in both the antenatal and postnatal periods among cross-sectional studies, and there were insufficient studies to analyse the reasons for the higher heterogeneity using meta-regression. Visual inspection of the data, however, suggests that heterogeneity may be due to variation in the timing of recruitment, e.g., for women recruited in the last trimester, proportionally more of the “past year” reference period includes the time they were pregnant than for women recruited in the first trimester. Similarly, proportionally more of the “past year” reference period includes the period of pregnancy for women recruited in the early postpartum period than women recruited at 9–12 mo postpartum. This variation could be relevant because the prevalence of domestic violence can be lower during pregnancy , and because the association between domestic violence and depression may vary as a function of when the violence occurred.
Insufficient characterisation of participants in the primary studies meant we were unable to assess the role of individual risk factors, such as social class. The lack of consistency in the type of data collected by the primary studies meant we were also unable to adjust estimates for potential confounders (e.g., history of depression or childhood abuse). In addition, most of the longitudinal studies did not provide data on baseline levels of symptoms or domestic violence, preventing clear interpretation on incident depression after domestic violence and vice versa. Thus, although having experienced domestic violence was strongly and consistently associated with probable antenatal and postnatal depression in both longitudinal and cross-sectional studies, we cannot draw firm conclusions about whether the observed association between domestic violence and probable perinatal depression is causal. As the calculation of the pooled PAF (the proportion of probable mental disorder potentially ascribable to exposure to intimate partner violence) is based on an assumption of causality, the PAF estimate should be treated with particular caution. Further high-quality longitudinal studies, including linked database studies, should be conducted to explore the nature of the association between domestic violence and perinatal mental disorder. Future research should also collect and report data on all types of violence (i.e., physical, sexual, and psychological violence); the majority (48/67) of the studies included in this review reported on physical violence—either alone or in combination with other forms of violence—and fewer than half reported prevalence and ORs disaggregated by type of violence.
Domestic violence during pregnancy is associated with risks to the fetus, child, and mother –. Our finding that women with high levels of symptoms of a range of perinatal mental disorders have a high prevalence and increased odds of having experienced domestic violence both over the lifetime and during pregnancy highlights the importance of health professionals identifying and responding to domestic violence among women attending antenatal and mental health services. The World Health Organization and some international guidelines recommend identification of domestic violence and mental disorders in women attending antenatal care and mental health care –. However, a recent Cochrane review found little data on whether screening and other interventions improve outcomes for women experiencing domestic violence in the perinatal period . Further data is therefore needed on how maternity and mental health services should best identify women with a history or current experience of domestic violence, respond appropriately and safely, and thus improve health outcomes for women and their infants in the perinatal period.
Funnel plots to assess publication bias.
Characteristics and reported outcomes of cross-sectional analyses of included studies.
Characteristics and reported outcomes of longitudinal analyses of included studies.
PRISMA checklist of items to include when reporting a systematic review or meta-analysis.
Systematic review protocol.
Search terms for Medline, Embase, and PsycINFO.
Critical appraisal checklist for included studies.
We gratefully acknowledge Professor Michael Dewey (King's College London's Institute of Psychiatry) for his advice regarding statistical analysis.
Conceived and designed the experiments: LMH GF. Analyzed the data: SO HG KT. Wrote the first draft of the manuscript: LMH SO. Contributed to the writing of the manuscript: LMH SO HG KT GF. ICMJE criteria for authorship read and met: LMH SO HG KT GF. Agree with manuscript results and conclusions: LMH SO HG KT GF.
- 1. Grote NK, Bridge JA, Gavin AR, Melville JL, Iyengar S, et al. (2010) A meta-analysis of depression during pregnancy and the risk of preterm birth, low birth weight and intrauterine growth restriction. Arch Gen Psychiatry 67: 1012–1024. doi: 10.1001/archgenpsychiatry.2010.111
- 2. Howard LM (2005) Fertility and pregnancy in women with psychotic disorders. Eur J Obstet Gynecol Reprod Biol 119: 3–10. doi: 10.1016/j.ejogrb.2004.06.026
- 3. Micali N, Simonoff E, Treasure J (2007) Risk of major adverse perinatal outcomes in women with eating disorders. Br J Psychiatry 190: 255–259. doi: 10.1192/bjp.bp.106.020768
- 4. Howard LM, Kirkwood G, Latinovic R (2007) Sudden infant death syndrome and maternal depression. J Clin Psychiatry 68: 1279–1283. doi: 10.4088/JCP.v68n0816
- 5. Webb R, Abel K, Pickles A, Appelby L (2005) Mortality in offspring of parents with psychotic disorders: a critical review and meta-analysis. Am J Psych 162: 1045–1056. doi: 10.1176/appi.ajp.162.6.1045
- 6. Webb RT, Abel KM, Pickles AR, Appelby L, King-Hele SA, et al. (2006) Mortality risk among offspring of psychiatric inpatients: a population-based follow-up to early adulthood. Am J Psych 163: 2170–2177. doi: 10.1176/appi.ajp.162.6.1045
- 7. Bick D, Howard LM (2010) When should women be screened for postnatal depression? Expert Rev Neurother 10: 151–154. doi: 10.1586/ern.09.156
- 8. Milgrom J, Gemmill AW, Bilszta JL, Hayes B, Barnet B, et al. (2008) Antenatal risk factors for postnatal depression: a large prospective study. J Affect Disord 108: 147–157. doi: 10.1016/j.jad.2007.10.014
- 9. Howard LM, Goss C, Leese M, Appleby L, Thornicroft G (2004) The psychosocial outcome of pregnancy in women with psychotic disorders. Schizophr Res 71: 49–60. doi: 10.1016/j.schres.2004.01.003
- 10. Goodman SH, Rouse MH, Connell AM, Broth MR, Hall CM, et al. (2011) Maternal depression and child psychopathology: a meta-analytic review. Clin Child Fam Psychol Rev 14: 1–27. doi: 10.1007/s10567-010-0080-1
- 11. O'Hara MW, Swain AM (1996) Rates and risks of postpartum depression—a meta-analysis. Int Rev Psychiatry 8: 37–54. doi: 10.3109/09540269609037816
- 12. Leight KL, Fitelson EM, Weston CA, Wisner KL (2010) Childbirth and mental disorders. Int Rev Psychiatry 22: 453–471. doi: 10.3109/09540261.2010.514600
- 13. Howard LM, Trevillion K, Agnew-Davies R (2010) Domestic violence and mental health. Int Rev Psychiatry 22: 525–534. doi: 10.3109/09540261.2010.512283
- 14. Trevillion K, Oram S, Feder G, Howard LM (2012) Experiences of domestic violence and mental disorders: a systematic review and meta-analysis. PLoS ONE 7: e51740 doi:10.1371/journal.pone.0051740.
- 15. Gazmararian JA, Lazorick S, Spitz AM, Ballard TJ, Saltzman LE, et al. (1996) Prevalence of violence against pregnant women. JAMA 275: 1915–1920. doi: 10.1001/jama.275.24.1915
- 16. Gazmararian JA, Petersen R, Spitz AM, Goodwin MM, Saltzman LE, et al. (2000) Violence and reproductive health: current knowledge and future research directions. Matern Child Health J 4: 7984.
- 17. Devries KM, Kishor S, Johnson H, Stöckl H, Bacchus LJ, et al. (2010) Intimate partner violence during pregnancy: analysis of prevalence data from 19 countries. Reprod Health Matters 18: 158–170. doi: 10.1016/S0968-8080(10)36533-5
- 18. Feder G, Ramsay J, Dunne D, Rose M, Arsene C, et al. (2009) How far does screening women for domestic (partner) violence in different health-care settings meet criteria for a screening programme? Systematic reviews of nine UK National Screening Committee critieria. Health Technol Assess 13: iii–347, iii-iv, xi-xiii, 1-113, 137-347. doi: 10.3310/hta13160
- 19. Flach C, Leese M, Heron J, Evans J, Feder G, et al. (2011) Antenatal domestic violence, maternal mental health and subsequent child behaviour: a cohort study. BJOG 118: 1383–1391. doi: 10.1111/j.1471-0528.2011.03040.x
- 20. Boy A, Salihu HM (2004) Intimate partner violence and birth outcomes: a systematic review. Int J Fertil Womens Med 49: 159–164.
- 21. Murphy CC, Schei B, Myhr TL, Du Mont J (2001) Abuse: a risk factor for low birth weight? A systematic review and meta-analysis. CMAJ 164: 1567–1572.
- 22. Lewis G (2007) Confidential enquiry into maternal and child health: saving mothers' lives. London: Centre for Maternal and Child Enquiries.
- 23. Beydoun H, Beydoun MA, Kaufman JS, Lo B, Zonderman AB (2012) Intimate partner violence against adult women and its association with major depressive disorder, depressive symptoms and postpartum depression: a systematic review and meta-analysis. Soc Sci Med 75: 959–975. doi: 10.1016/j.socscimed.2012.04.025
- 24. Lancaster CA, Gold KJ, Flynn HA, Yoo H, Marcus SM, et al. (2010) Risk factors for depressive symptoms during pregnancy: a systematic review. Am J Obstet Gynecol 5–14. doi: 10.1016/j.ajog.2009.09.007
- 25. Wu Q, Chen HL, Xu XJ (2012) Violence as a risk factor for postpartum depression in mothers: a meta-analysis. Arch Womens Ment Health 15: 107–114. doi: 10.1007/s00737-011-0248-9
- 26. Fisher J, Cabral de Mello C, Patel V, Rahman A, Tran T, et al. (2012) Prevalence and determinants of common perinatal mental disorders in women in low and low middle income countries: a systematic review. Bull World Health Organ 90: 139–149. doi: 10.1080/01621459.2000.10474324
- 27. Stroup DF, Berlin JA, Morton SC, Olkin I, Williamson GD, et al. (2000) Meta-analysis of observational studies in epidemiology: a proposal for reporting. Meta-analysis Of Observational Studies in Epidemiology (MOOSE) group. JAMA 283: 2008–2012. doi: 10.1001/jama.283.15.2008
- 28. Moher D, Liberati A, Tetzlaff J, Altman DG (2009) Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. PLoS Med 6: e1000097 doi:10.1371/journal.pmed.1000097.
- 29. Maniglio R (2009) Severe mental illness and criminal victimization: a systematic review. Acta Psychiatr Scand 119: 180–191. doi: 10.1111/j.1600-0447.2008.01300.x
- 30. Friedman SH, Loue S (2007) Incidence and prevalence of intimate partner violence by and against women with severe mental illness. J Womens Health (Larchmt) 16: 471–480. doi: 10.1089/jwh.2006.0115
- 31. National Institute for Health and Clinical Excellence (2008) The guidelines manual. London: National Institute for Health and Clinical Excellence.
- 32. Ramsay J, Carter Y, Davidson L, Dunne D, Eldridge S, et al. (2009) Advocacy interventions to reduce or eliminate violence and promote the physical and psychosocial well-being of women who experience intimate partner abuse. Cochrane Database Syst Rev 2009: CD005043 doi:005010.001002/14651858.CD14005043.pub14651852.
- 33. Critical Appraisal Skills Programme (2006) Appraising the evidence. Available: http://www.casp-uk.net/find-appraise-act/appraising-the-evidence/. Accessed 22 April 2012.
- 34. Cochrane Collaboration (2002) The Cochrane Collaboration open learning material: publication bias. Available: http://www.cochrane-net.org/openlearning/html/mod15-3.htm. Accessed 12 April 2013.
- 35. StataCorp (2009) Stata statistical software: release 11. College Station (Texas): StataCorp.
- 36. Smith MV, Gotman N, Lin H, Yonkers KA (2010) Do the PHQ-8 and the PHQ-2 accurately screen for depressive disorders in a sample of pregnant women? Gen Hosp Psychiatry 32: 544–548. doi: 10.1016/j.genhosppsych.2010.04.011
- 37. Gibson J, McKenzie-McHarg K, Shakespeare J, Price J, Gray R (2009) A systematic review of studies validating the Edinburgh Postnatal Depression Scale in antepartum and postpartum women. Acta Psychiatr Scand 119: 350–364. doi: 10.1111/j.1600-0447.2009.01363.x
- 38. Abbaszadeh A, Kermani FP, Safizadeh H, Nakhee N (2011) Violence during pregnancy and postpartum depression. Pak J Med Sci Q 27: 177–181.
- 39. Ahmed HM, Alalaf SK, Al-Tawil NG (2012) Screening for postpartum depression using Kurdish version of Edinburgh postnatal depression scale. Arch Gynecol Obstet 285: 1249–1255. doi: 10.1007/s00404-011-2165-6
- 40. Ali NS, Ali BS, Azam IS (2009) Postpartum anxiety and depression in peri-urban communities of Karachi, Pakistan: a quasi-experimental study. BMC Public Health 9: 384. doi: 10.1186/1471-2458-9-384
- 41. Ali NS, Azam IS, Ali BS, Tabbusum G, Moin SS (2012) Frequency and associated factors for anxiety and depression in pregnant women: a hospital-based cross-sectional study. ScientificWorldJournal 2012: 653098. doi: 10.1100/2012/653098
- 42. Ammerman RI, Putnam FW, Altaye M, Chen L, Holleb LJ, et al. (2009) Changes in depressive symptoms in first time mothers in home visitation. Child Abuse Negl 33: 127–138. doi: 10.1016/j.chiabu.2008.09.005
- 43. Beydoun HA, Al-Sahab B, Beydoun MA, Tamim H (2010) Intimate partner violence as a risk factor for postpartum depression among Canadian women in the Maternity Experience Survey. Ann Epidemiol 20: 575–583. doi: 10.1016/j.annepidem.2010.05.011
- 44. Brown SJ, McDonald EA, Krastev AH (2008) Fear of an intimate partner and women's health in early pregnancy: findings from the maternal health study. Birth 35: 293–302. doi: 10.1111/j.1523-536X.2008.00256.x
- 45. Budhathoki N, Dahal M, Bhusal S, Ojha H, Pandey S, et al. (2012) Violence against women by their husband and postpartum depression. J Nepal Health Res Counc 10: 176–180.
- 46. Certain HE, Mueller M, Jagodzinski T, Fleming M (2008) Domestic abuse during the previous year in a sample of postpartum women. J Obstet Gynecol Neonatal Nurs 37: 35–41.
- 47. Cerulli C, Talbot NL, Tang W, Chaudron LH (2011) Co-occurring intimate partner violence and mental health diagnoses in perinatal women. J Womens Health (Larchmt) 20: 1797–1803. doi: 10.1089/jwh.2010.2201
- 48. Crempien RC, Rojas G, Cumsille P, Oda MC (2011) Domestic violence during pregnancy and mental health: exploratory study in primary health centers in Penalolen. ISRN Obstet Gynecol 2011: 265817. doi: 10.5402/2011/265817
- 49. Cwikel J, Lev-Wiesel R, Al-Krenawi A (2003) The physical and psychosocial health of Bedouin Arab women of the Negev area of Israel: the impact of high fertility and pervasive domestic violence. Violence Against Women 9: 240–257. doi: 10.1177/1077801202239008
- 50. DeKlyen M, Brooks-Gunn J, McLanahan S, Knab J (2006) The mental health of married, cohabiting and non-coresident parents with infants. Am J Public Health 96: 1836–1841. doi: 10.2105/AJPH.2004.049296
- 51. Dennis CL, Vigod S (2013) The relationship between postpartum depression, domestic violence, childhood violence, and substance use: epidemiologic study of a large community sample. Violence Against Women In press. doi: 10.1177/1077801202239008
- 52. Dunn LL, Oths KS (2004) Prenatal predictors of intimate partner abuse. J Obstet Gynecol Neonatal Nurs 33: 54–63. doi: 10.1177/0884217503261080
- 53. Ferrari Audi CA, Segall-Correa AM, Santiago SM, Andrade MdGG, Perez-Escamila R (2008) Violence against pregnant women: prevalence and associated factors. Rev Saude Publica 42: 877–885. doi: 10.1590/S0034-89102008005000041
- 54. Fisher J, Thach T, Buoi TL, Kriitmaa K, Rosenthal D, et al. (2010) Common perinatal mental disorders in northern Viet Nam: community prevalence and health care use. Bull World Health Organ 88: 737–745. doi: 10.2471/BLT.09.067066
- 55. Fisher J, Tran T, Duc Tran T, Dwyer T, Nguyen T, et al. (2012) Prevalence and risk factors for symptoms of common mental disorders in early and late pregnancy in vietnamese women: a prospective population-based study. J Affect Disord 146: 213–219. doi: 10.1016/j.jad.2012.09.007
- 56. Gao W, Paterson J, Abbott M, Carter S, Iusitini L (2010) Pacific Islands families study: intimate partner violence and postnatal depression. J Immigr Minor Health 12: 242–248. doi: 10.1007/s10903-008-9190-y
- 57. Gausia K, Fisher C, Ali M, Oosthuizen J (2009) Antenatal depression and suicidal ideation among rural Bangladeshi women: a community-based study. Arch Womens Ment Health 12: 351–358. doi: 10.1007/s00737-009-0080-7
- 58. Gausia K, Fisher C, Ali M, Oosthuizen J (2009) Magnitude and contributory factors of postnatal depression: a community-based cohort study from a rural subdistrict of Bangladesh. Psychol Med 33: 999–1007. doi: 10.1017/S0033291708004455
- 59. Gavin A, Melville JL, Rue T, Guo Y, Tabb Dina K, et al. (2011) Racial differences in the prevalence of antenatal depression. Gen Hosp Psychiatry 33: 87–93. doi: 10.1016/j.genhosppsych.2010.11.012
- 60. Gomez-Beloz A, Williams MA, Sanchez SE, Lam N (2009) Intimate partner violence and risk for depression among postpartum women in Lima, Peru. Violence Vict 24: 380–398. doi: 10.1891/0886-6708.24.3.380
- 61. Groves AK, Kagee A, Maman S, Moodley D, Rouse P (2012) Associations between intimate partner violence and emotional distress among pregnant women in Durban, South Africa. J Interpers Violence 27: 1341–1356. doi: 10.1177/0886260511425247
- 62. Hartley M, Tomlinson M, Greco E, Comulada WS, Stewart J, et al. (2011) Depressed mood in pregnancy: prevalence and correlates in two Cape Town peri-urban settlements. Reprod Health 89: 8–9.
- 63. Harvey ST, Pun PK (2007) Analysis of positive Edinburgh depression scale referrals to a consultation liaison psychiatry service in a two-year period. Int J Ment Health Nurs 16: 161–167. doi: 10.1111/j.1447-0349.2007.00463.x
- 64. Ho-Yen SD, Bondevik GT, Eberhard-Gran M, Bjorvatin B (2007) Factors associated with depressive symptoms among postnatal women in Nepal. Acta Obstet Gynecol Scand 86: 291–297. doi: 10.1080/00016340601110812
- 65. Husain N, Bevc I, Husain M, Chaudhury IB, Atif N, et al. (2006) Prevalence and social correlates of postnatal depression in a low income country. Arch Womens Ment Health 9: 197–202. doi: 10.1007/s00737-006-0129-9
- 66. Imran N, Haider II (2010) Screening of antenatal depression in Pakistan: risk factors and effects on obstetric and neonatal outcomes. Asia Pac Psychiatry 2: 26–32.
- 67. Jesse DE, Walcott-McQuigg J, Mariella A, Swanson MS (2005) Risks and protective factors associated with symptoms of depression in low-income African American and Caucasian women during pregnancy. J Midwifery Womens Health 50: 405–410. doi: 10.1016/j.jmwh.2005.05.001
- 68. Jundt K, Haertl K, Knobbe A, Kaestner R, Friese K, et al. (2009) Pregnant women after physical and sexual abuse in Germany. Gynecol Obstet Invest 68: 82–87. doi: 10.1159/000215931
- 69. Karaçam Z, Ançel G (2009) Depression, anxiety and influencing factors in pregnancy: a study in a Turkish population. Midwifery 25: 344–356. doi: 10.1016/j.midw.2007.03.006
- 70. Karmaliani R, Asad N, Bann CM, Moss N, McClure EM, et al. (2009) Prevalence of anxiety, depression and associated factors among pregnant women of Hyderabad, Pakistan. Int J Soc Psychiatry 55: 414–424. doi: 10.1177/0020764008094645
- 71. Kiely M, El-Mohandes AA, El-Khorazaty M, Gantz MG (2010) An integrated intervention to reduce intimate partner violence in pregnancy: a randomized trial. Obstet Gynecol 115: 273–283. doi: 10.1097/AOG.0b013e3181cbd482
- 72. Kim H, Mandell M, Crandall C, Kuskowski M, Dieperink B, et al. (2006) Antenatal psychiatric illness and adequacy of prenatal care in an ethnically diverse inner-city obstetric population. Arch Womens Ment Health 9: 103–107. doi: 10.1007/s00737-005-0117-5
- 73. Kornfeld BD, Bair-Merritt MH, Frosch E, Solomon BS (2012) Postpartum depression and intimate partner violence in urban mothers: co-occurrence and child healthcare utilization. J Pediatr 161: 348–353. doi: 10.1016/j.jpeds.2012.01.047
- 74. Leung WC, Kung F, Lam J, Leung TW, Ho PC (2002) Domestic violence and postnatal depression in a Chinese community. Int J Gynaecol Obstet 79: 159–166. doi: 10.1016/S0020-7292(02)00236-9
- 75. Lobato G, Moraes CL, Dias AS, Reichenheim ME (2011) Alcohol misuse among partners: a potential effect modifier in the relationship between physical intimate partner violence and postpartum depression. Soc Psychiat Epidemiol 47: 427–438. doi: 10.1007/s00127-011-0346-z
- 76. Ludermir A, Lewis G, Valongueiro S (2010) Violence against women by their intimate partner during pregnancy and postnatal depression: a prospective cohort study. Lancet 376: 903–910. doi: 10.1016/S0140-6736(10)60887-2
- 77. Malta LA, McDonald SW, Hegadoren KM, Weller CA, Tough SC (2012) Influence of interpersonal violence on maternal anxiety, depression, stress and parenting morale in the early postpartum: a community based pregnancy cohort study. BMC Pregnancy Childbirth 12: 153. doi: 10.1186/1471-2393-12-153
- 78. Manzolli P, Nunes MA, Schmidt MI, Ferri CP (2012) Abuse against women, depression, and infant morbidity: a primary care cohort study in Brazil. Am J Prev Med 43: 188–195. doi: 10.1016/j.amepre.2012.04.013
- 79. Martin SL, Yun L, Casanueva C, Hanis-Britt A, Kupper LL, et al. (2006) Intimate partner violence and women's depression before and during pregnancy. Violence Against Women 12: 221–239. doi: 10.1177/1077801205285106
- 80. McGarry J, Kim H, Sheng XM, Egger M, Baksh L (2009) Postpartum depression and help-seeking behavior. J Midwifery Womens Health 54: 50–56. doi: 10.1016/j.jmwh.2008.07.003
- 81. Melo EF Jr, Cecatti JG, Pacagnella RC, Leite DFB, Vulcani DE, et al. (2012) The prevalence of perinatal depression and its associated factors in two different settings in Brazil. J Affect Disord 136: 1204–1208. doi: 10.1016/j.jad.2011.11.023
- 82. Mezey G, Bacchus L, Bewley S (2005) Domestic violence, lifetime trauma and psychological health of childbearing women. BJOG 112: 197–204. doi: 10.1111/j.1471-0528.2004.00307.x
- 83. Miszkurka M, Zunzunegui MV, Goulet L (2012) Immigrant status, antenatal depressive symptoms, and frequency and source of violence: what's the relationship? Arch Womens Ment Health 15: 387–396. doi: 10.1007/s00737-012-0298-7
- 84. Nasreen HE, Kabir ZN, Forsell Y, Edhborg M (2011) Prevalence and associated factors of depressive and anxiety symptoms during pregnancy: a population based study in rural Bangladesh. BMC Womens Health 11: 22. doi: 10.1186/1472-6874-11-22
- 85. Nunes MA, Camey S, Ferri CP, Manzolli P, Manenti CN, et al. (2011) Violence during pregnancy and newborn outcomes: a cohort study in a disadvantaged population in Brazil. Eur J Public Health 21: 92–97. doi: 10.1093/eurpub/ckp241
- 86. Patel V, Rodrigues M, DeSouza N (2002) Gender, poverty, and postnatal depression: a study of mother in Goa, India. Am J Psych 159: 43–47. doi: 10.1176/appi.ajp.159.1.43
- 87. Pollock JI, Manaseki-Holland S, Patel V (2009) Depression in Mongolian women over the first 2 months after childbirth: prevalence and risk factors. J Affect Disord 116: 126–133. doi: 10.1016/j.jad.2008.11.010
- 88. Pooler J, Perry DF, Ghandour RM (2013) Prevalence and risk factors for postpartum depressive symptoms among women enrolled in WIC. Matern Child Health J E-pub ahead of print. doi: 10.1007/s10995-013-1224-y
- 89. Quelopana A (2012) Violence against women and postpartum depression: the experience of Chilean women. Women Health 52: 437–453. doi: 10.1080/03630242.2012.687443
- 90. Radestad I, Ebeling M, Hildingsson I, Rubertsson C (2004) What factors in early pregnancy indicate that the mother will be hit by her partner during the year after childbirth? A nationwide Swedish survey. Birth 31: 84–92. doi: 10.1111/j.0730-7659.2004.00285.x
- 91. Records K, Rice MJ (2009) Lifetime physical and sexual abuse and the risk for depression symptoms in the first 8 months after birth. J Psychosom Obstet Gynaecol 30: 181–190. doi: 10.1080/01674820903178121
- 92. Rodriguez MA, Heilemann MV, Fielder E, Ang A, Nevarez F, et al. (2008) Intimate partner violence, depression, and PTSD among pregnant Latina women. Ann Fam Med 6: 44–52. doi: 10.1370/afm.743
- 93. Romito P, Pomicino L, Lucchetta C, Scrimin F, Turan JM (2009) The relationships between physical violence, verbal abuse and women's psychological distress during the postpartum period. J Psychosom Obstet Gynaecol 30: 115–121. doi: 10.1080/01674820802545834
- 94. Saurel-Cubizolles MJ, Blondel B, Lelong N, Romito P (1997) Marital violence after birth. Fertil Contracept Sex 25: 159–164.
- 95. Seng JS, Low LK, Sperlich M, Ronis DL, Liberzon I (2009) Prevalence, trauma history, and risk for posttraumatic stress disorder among nulliparous women in maternity care. Obstet Gynecol 114: 839–847. doi: 10.1097/AOG.0b013e3181b8f8a2
- 96. Thananowan N, Heidrich S (2008) Intimate partner violence among pregnant Thai women. Violence Against Women 14: 509–527. doi: 10.1177/1077801208315525
- 97. Thompson J, Canterino JC, Feld SM, Stumpf PG, Kuo Y, et al. (2000) Risk factors for domestic violence in pregnant women. Prim Care Update Ob Gyns 7: 138–141. doi: 10.1016/s1068-607x(00)00035-4
- 98. Tiwari A, Chan KL, Fong D, Leung WC, Brownridge DA, et al. (2008) The impact of psychological abuse by an intimate partner on the mental health of pregnant women. BJOG 115: 377–384. doi: 10.1111/j.1471-0528.2007.01593.x
- 99. Tuten M, Jones HE, Tran G, Svikis DS (2004) Partner violence impacts the psychosocial and psychiatric status of pregnant, drug-dependent women. Addict Behav 29: 1029–1034. doi: 10.1016/j.addbeh.2004.02.055
- 100. Woolhouse H, Gartland D, Hegarty K, Brown S (2012) Depressive symptoms and intimate partner violence in the 12 months after childbirth: a prospective pregnancy cohort study. BJOG 119: 315–323. doi: 10.1111/j.1471-0528.2011.03219.x
- 101. Zhang Y, Zou S, Cao Y (2012) Relationship between domestic violence and postnatal depression among pregnant Chinese women. Int J Gynaecol Obstet 116: 26–30. doi: 10.1016/j.ijgo.2011.08.011
- 102. Dolatian M, Hesami K, Shams J, Majd HA (2010) Relationship between violence during pregnancy and postpartum depression. Iran Red Crescent Med J 12: 377–383.
- 103. Hayes BA, Campbell A, Buckby B, Geia LK, Egan ME (2010) The interface of mental and emotional health and pregnancy in urban indigenous women: research in progress. Infant Ment Health J 31: 277–290.
- 104. Trevillion K (2013) The identification and response of psychiatric services to domestic violence [PhD dissertation]. London: Instsitute of Psychiatry, King's College London.
- 105. World Health Organization, London School of Hygiene and Tropical Medicine (2010) Preventing intimate partner and sexual violence against women: taking action and generating evidence. Geneva: World Health Organization.
- 106. United Kingdom Department of Health (2008) Refocusing the care programme approach: policy and positive practice guidance. London: Department of Health. 64 p.
- 107. U.S. Preventive Services Task Force, Agency for Healthcare Research and Quality (2004) Screening for family and intimate partner violence. Rockville (Maryland): Agency for Healthcare Research and Quality.
- 108. Jahanfar S, Janssen PA, Howard LM, Dowswell T (2011) Interventions for preventing or reducing domestic violence against pregnant women. Cochrane Database Syst Rev 2011: CD14009414 doi:10.1002/14651858.CD14009414.