Introduction

A movement towards universal health coverage (UHC)—ensuring that everyone who needs health services is able to get them, without undue financial hardship—has been growing across the globe [1]. Close to half of the countries of the world—across all income levels—are currently engaged in health reforms that aim to extend, deepen, or otherwise improve coverage with needed health services and/or financial protection. These reforms have led to a sharp increase in the demand for expertise, evidence, and measures of progress and also a push to make UHC one of the goals of the post-2015 development agenda [2].

UHC has been defined as the desired outcome of health system performance, whereby all people who need health services (promotion, prevention, treatment, rehabilitation, and palliation) receive them, without undue financial hardship [1]. UHC has two interrelated components: the full spectrum of good-quality, essential health services according to need and protection from financial hardship, including possible impoverishment due to out-of-pocket payments for health services. Both components should benefit the entire population. In the context of this framework, “essential” is used to describe the services that a country decides should be available immediately to all people who need them. The contents of the services vary by setting.

The dimensions have commonly been depicted as a cube, shown in Figure 1 (adapted from [3],[4]). The first axis represents the population, the people who need health services. The services axis depicts the quality health services they need. The vertical axis is the proportion of the total cost of providing services to the population that is financed through “pooled financing systems” as opposed to direct payments by patients, shown in Figure 1 as the box labelled “current pooled funds.”

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Figure 1. Progressive realization of universal health coverage.

https://doi.org/10.1371/journal.pmed.1001731.g001

In this illustration, a little more than a half the population is covered for about half of the possible services they need, but only half the cost of these services is met from pooled funds. There is thus a shortfall of service coverage among those who receive services, inequity in service coverage (a large fraction of the population receives no services), and a lack of financial protection (those who receive services pay a large part out-of-pocket and hence risk financial hardship). To get closer to UHC, the country would need to provide services to the people who currently need them but don't receive any, provide more services to those who currently receive some but not the full range of services they need, and raise the fraction of health spending financed through pooled funds to improve financial protection. At the same time, health services need to be of sufficient quality to achieve the desired outcomes, so improving quality will be a priority in many settings.

Each country progresses in filling the different dimensions of the box (Figure 1) according to its preferences and constraints, trading off what services are provided, who gets them, and how much they are financed out of pooled funds. As such, UHC is the ultimate objective or goal, with countries starting from different places, with very different health problems, health systems, and resources. They need to find their own paths.

UHC is a dynamic, rather than static, concept. New health technologies and medical products are developed continually, as are new ways of improving the quality of care. The health service axis in Figure 1, therefore, expands over time. Many of the innovations come at higher costs, while population demands for new and better technologies also increase, putting upward pressure on pooled resources and making it harder to hold constant—let alone raise—the share of spending financed through pooled resources. That is why the search to attain and maintain UHC concerns even the richest countries, particularly at times of financial crises, when their ability to maintain high standards of service coverage and low household out-of-pocket payments is put under considerable strain.

This PLOS Collection focuses on the monitoring of progress towards UHC, which should be a central component of any UHC strategy. Country case studies and technical reviews were conducted as part of the development of a global monitoring framework by World Health Organization (WHO) and the World Bank Group. The country case studies [5]–[17] aimed to document what indicators, measurement, and communication approaches work best to monitor progress towards UHC. The technical review papers addressed issues related to the measurement of financial protection [18], service coverage [19], effective coverage [20], equity and UHC [21], and as an example of a health program, the implications for tuberculosis program monitoring [22].

The second version of the WHO/World Bank Group UHC monitoring framework was published in May 2014 [23]. In addition to the country case studies and technical reviews, the framework was based on consultations and discussions with country representatives, technical experts, and global health and development partners [24]. The feedback and country case studies were synthesized and reviewed at a meeting of country and global experts in Bellagio, Italy, in March 2014 [25]. The framework was modified to reflect the views emerging from these consultations and lessons learned from the country case studies.

The UHC monitoring framework aims to inform and guide assessment of both aggregate and equitable coverage of essential health services as well as financial protection. Monitoring progress towards these two components of UHC will be complementary and critical to achieving desirable health outcome goals, such as ending preventable deaths and promoting longer healthy life expectancy, and also reducing poverty and protecting household incomes. The main characteristics of the monitoring framework are described in Box 1. The global goal and proposed targets and indicators are presented in Box 2.

This overview of the PLOS Monitoring Universal Health Coverage Collection synthesizes selected findings of the country case studies and technical reviews, considering key topics such as the implications of the diversity of UHC policies and strategies for country monitoring frameworks, approaches to monitor health service coverage, financial protection and equity, the use of targets and summary measures, and the required investments to improve monitoring. The paper concludes with the way forward related to global guidance and country implementation, indicators and targets, and measurement investments.

Country Monitoring

Monitoring progress towards UHC by countries should take into account the country's unique epidemiological and demographic profile, health system, level of economic development, and the population's demands and expectations. These country-specific dimensions are critical for deciding what should be monitored; for example, emerging economies might focus on how best to expand essential services to remote areas, whereas high-income countries might focus on modifying the range of available health services to allow for a growing elderly population. While the country context determines the measures used, the domains to be monitored—coverage with essential, good-quality services and with financial protection—are relevant to all countries, regardless of their level of income, their demographic profile or their health needs.

The PLOS Collection country case studies show the variation of ways in which UHC has been reflected in national policies and strategies. Often UHC policies build upon other policies that have been in existence for many years (e.g., Estonia [10], Ghana [11], and India [12]). Several countries have well-established strategies to increase access, coverage, and quality of services and financial protection among all population groups, such as Thailand [16], Brazil [6], Singapore [13], and Chile [7]. Some countries have linked the UHC goal with broad health reforms (e.g., China [8], Estonia [10], and Ghana [11]). Other countries are in the process of developing overall UHC policies and focused largely on the Millennium Development Goals (MDGs), but are also expanding strategies to enhance access to services and financial protection (e.g., Ethiopia [9], Bangladesh [5], and Tanzania [15]).

No matter what policy or strategy is in effect or the stage of implementation, countries will have to embed UHC progress monitoring in overall monitoring of health system performance and health progress. Currently, no country has a separate monitoring framework for UHC, but for some, UHC is well integrated in the overall sector monitoring framework (e.g., Thailand [16] and Estonia [10]). The experience from Thailand [16] describes how a system that monitors progress towards UHC can be built up over a long period, but having a solid framework with indicators, targets, data sources, data quality assessment and analysis, and clear roles and responsibilities of country institutions is likely to improve monitoring and enhance its efficiency.

The indicators used to monitor health sector performance generally include the main UHC progress indicators. For instance, Ethiopia already monitors three dozen service coverage and financial protection indicators on a regular basis [9]. Furthermore, in other countries the assessment of the current situation and recent progress towards UHC includes a focus on coverage and financial protection indicators, but also considers the full array of health system performance indicators at the same time (e.g., Chile [7] and Estonia [10]). In Singapore, even though there is no monitoring framework for UHC, indicators of access, quality, and affordability of services are regularly tracked and reported to Parliament as part of the key performance indicators of the Ministry of Health [13]. Finally, several countries have extensive systems of periodic health sector performance reviews at subnational and national levels which provide an excellent vehicle for UHC monitoring (e.g., Ghana [11] and Brazil [6]).

The paper on monitoring UHC in the context of tuberculosis care and prevention provides a global example of how the disease-specific monitoring of intervention coverage and financial protection take into account the full array of indicators, from input to impact, to assess programme performance [22].

Discussion

The country studies and technical papers in this PLOS Collection show the usefulness and feasibility of the WHO/World Bank Group UHC monitoring framework. They illustrate how the framework can be used to translate the goal of UHC into measures of progress that are valid and feasible, and often comparable among countries. Together, these measures can provide a snapshot of health system performance with respect to coverage with some essential health services and financial protection, for the population as a whole and for critical subpopulations, based on household income, expenditure or wealth, place of residence, and sex. Using the targets and indicators, countries can identify their gaps in coverage and ascertain how far and fast they should improve the performance of their health systems to achieve progress towards UHC.

At this point in time, however, very few countries have an explicit Monitoring and Evaluation (M&E) framework for UHC at this stage. Such a UHC monitoring framework should be fully integrated in the existing overall health sector performance framework.

The global framework for monitoring UHC is designed to facilitate comparison of progress towards UHC among countries. Each country is expected to add further measures of service coverage and further equity stratifiers in order to tailor UHC monitoring to its context. UHC monitoring is not a substitute for other measures of health system performance, such as improved health status or health worker density and distribution. Rather, it should be seen as a core part of a comprehensive monitoring framework in which inputs are linked to outputs and health outcomes. The UHC measures of intervention coverage and financial protection can thus make a valuable contribution to assessment of health systems performance and to the achievement of desired health outcomes.

UHC is not built around a single universal package of interventions: each country should define the “essential” services that need to be available to all people. Therefore, the monitoring framework does not provide a single set of essential service indicators. However, the country case studies show that there is considerable agreement between the selected indicators. These indicators generally include prevention and primary care coverage indicators such as those related to the MDGs, including skilled birth attendance and antiretroviral therapy coverage, and the prevention and control of risk factors for NCDs. Only a few country studies included indicators of more advanced secondary and tertiary care interventions. These differences are partly associated with variations between countries in levels of socioeconomic development, health systems, and epidemiological situations, which in turn affects the current priorities for the country's UHC strategy. But it is also because of limitations of the available data for the indicators.

The reviews of country UHC monitoring and global methodological issues show that there are a limited number of indicators of service coverage that are relevant, of reasonable quality, and feasible to measure with existing instruments, especially for the coverage of treatment services. Tracking of progress in financial protection measures is also hampered by lack of data. Investments are required to develop methods for devising a more comprehensive set of UHC indicators. Moreover, investing in data collection through household surveys using standardized questions and health facilities information systems is an important global public benefit and good value for the money in the pursuit of the goal of UHC. Only countries with a regular health examination survey on the main health priorities and a well-functioning health facility information system are able to generate the full set of disaggregated information on progress towards UHC.

Monitoring progress towards UHC is central to achieving the global goals of the World Bank Group and WHO, the MDGs, and the emerging post-2015 global development framework. The World Bank Group has set a global goal of ending extreme poverty by 2030. UHC is critical to achieving this goal, as it will prevent impoverishment of hundreds of millions of families because of out-of-pocket payments for health services. WHO places the highest priority on securing the right to health and attaining the highest levels of health for all. UHC secures universal entitlement to essential health services, which are important contributors to improving the health status of the population in all countries. Similarly, the World Bank Group's global goal to promote shared prosperity for the poorest 40% of the population in every low- and middle-income country is closely aligned with WHO's focus on equity and the United Nations High-level Panel's recommendation to “hardwire” equity into all post-2015 measures [2].

There is emerging consensus that the post-2015 agenda should address the unfinished agenda of the health-related MDGs as well as the emerging burden of NCDs, including mental health and injuries. There is already a strong foundation of health indicators to build upon, including the intervention coverage indicators [30] of the health-related MDGs, such as vaccination and antiretroviral therapy coverage, the recommended priority interventions related to NCDs [31],[32] and indicators of financial protection [33]. Further work needs to be done in consultation with countries and partners to identify and define specific prevention and treatment indicators. The importance of multisectoral influences on health should also be acknowledged, although it is not explicitly addressed in this paper. Further work is also needed to firmly link monitoring of progress towards UHC with monitoring of key social and environmental determinants of health and sustainable development. Further research and investments are needed to address these multiple information gaps, which should be a priority for research in the coming years [34].

Conclusion

Based on this PLOS Collection it can be concluded that the global UHC monitoring framework provides an excellent basis for global and country monitoring of UHC, with appropriate adaptations. The focus is on country monitoring. Each country should develop a UHC monitoring framework, embedded in regular overall health progress and performance reviews that already exist in most countries. A monitoring framework includes the selection of a set of tracer indicators and targets, based on country demographic and epidemiological profile, health systems, level of socioeconomic development, and people's needs and expectations. Inequalities should be monitored across multiple stratifiers, including socioeconomic status, place of residence, and sex, where relevant. Monitoring the quality of services should receive special attention. International comparisons using tracer indicators can be used to benchmark country progress, keeping in mind the considerable diversity of UHC strategies and contents. Box 3 summarizes these recommendations.

To achieve such monitoring systems in countries, it is necessary to address data gaps and invest in comprehensive health information systems that include regular health examination surveys that address the full burden of disease, socioeconomic surveys with health expenditure modules, and well-functioning health facility data reporting systems. The global community can contribute by developing common standards for measurement of the core indicators, aligning and minimizing disease-specific monitoring efforts, and streamlining health data collection investments in support of national monitoring systems that meet all country needs.

Acknowledgments

This paper builds upon a series of consultations and discussions with country representatives, technical experts, and global health and development partners. A draft of the framework was posted online and circulated widely for consultation between December 2013 and February 2014. We are grateful for the 68 comments that were received from diverse constituencies globally (countries, development partners, civil society, academics, and other interested stakeholders). We also wish to acknowledge the participants of a meeting of country and global experts at the Rockefeller Centre, Bellagio, Italy, in March 2014, for their input.