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Research Article

Differences in Reporting of Analyses in Internal Company Documents Versus Published Trial Reports: Comparisons in Industry-Sponsored Trials in Off-Label Uses of Gabapentin

  • S. Swaroop Vedula,

    Affiliation: Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

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  • Tianjing Li,

    Affiliation: Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

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  • Kay Dickersin mail

    kdickers@jhsph.edu

    Affiliation: Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

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  • Published: January 29, 2013
  • DOI: 10.1371/journal.pmed.1001378

About the Authors

S. Swaroop Vedula, Tianjing Li, Kay Dickersin
Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America

Corresponding Author

Email: kdickers@jhsph.edu

Competing Interests

SSV received funds from the plaintiffs' lawyers as payment for providing assistance to KD in preparing her report as an expert witness in the litigation against Pfizer. KD asked that funds she would have received be donated to create an account at Johns Hopkins University to facilitate development of educational materials on reporting biases. TL has no competing interests to declare. The authors declare no other competing interests.

Author Contributions

Conceived and designed the experiments: SSV TL KD. Performed the experiments: SSV TL KD. Analyzed the data: SSV TL KD. Contributed reagents/materials/analysis tools: SSV TL KD. Wrote the first draft of the manuscript: SSV. Contributed to the writing of the manuscript: SSV TL KD. ICMJE criteria for authorship read and met: SSV TL KD. Agree with manuscript results and conclusions: SSV TL KD.