Journal of Clinical Epidemiology
Volume 59, Issue 10 , Pages 1040-1048, October 2006

A simple and valid tool distinguished efficacy from effectiveness studies

  • Gerald Gartlehner

      Affiliations

    • University of North Carolina at Chapel Hill, Cecil G. Sheps Center for Health Services Research, 725 Martin Luther King Jr. Boulevard, Chapel Hill, NC 27599, USA
    • Corresponding Author InformationCorresponding author. Tel. 919-966-7102; fax: 919-966-1634.
    • ,
  • Richard A. Hansen

      Affiliations

    • University of North Carolina, School of Pharmacy, Division of Pharmaceutical Policy & Evaluative Sciences, Chapel Hill, NC, USA
    • ,
  • Daniel Nissman

      Affiliations

    • Medical University of South Carolina – Department of Radiology, SC, USA
    • ,
  • Kathleen N. Lohr

      Affiliations

    • RTI International, Research Triangle Park, NC, USA
    • ,
  • Timothy S. Carey

      Affiliations

    • University of North Carolina, Cecil G. Sheps Center for Health Services Research, Chapel Hill, NC, USA

Accepted 22 January 2006. published online 10 August 2006.

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 Funding for this research was provided to the RTI-UNC EPC through a contract from the AHRQ to RTI International (contract number 290-02-0016). The funding source had no involvement in the design and conduct of the study, and in the analysis and interpretation of data.

PII: S0895-4356(06)00119-3

doi:10.1016/j.jclinepi.2006.01.011

Journal of Clinical Epidemiology
Volume 59, Issue 10 , Pages 1040-1048, October 2006

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