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. Author manuscript; available in PMC: 2014 May 14.
Published in final edited form as: Eval Health Prof. 2013 Aug 19;36(4):432–446. doi: 10.1177/0163278713499586

Table 5.

Studies with adequate accrual (recruitment)

Description What proportion of studies recruited and retained the number of subjects required to analyze their primary research question.
Operational Definitions:
  • Adequate Recruitment:
    • Numerator: # of subjects recruited for study
    • Denominator: # of subjects needed by the eligible study based on either 1) power analysis or 2) original grant proposal
Rationale Studies not meeting the number will have insufficient statistical power to complete their analyses.
Inclusion/Exclusion Inclusion: NIH-funded, human subjects clinical research studies that are closed to recruitment (studies may still be collecting data or conducting analyses)
Exclusion: studies with corporate/non-federal funding; those using only qualitative methods; multi-site studies
Possible Descriptive Data to Collect
  • Type of review: exempt/non-exempt/full board review

  • Length of time study open for enrollment: <6 months; 7–11months; 12–13; 24+

  • Type of study: clinical trial; observational/survey

  • Type of population: Pediatric only; Adult only

  • Disease/condition studied: need to determine what would be the relevant groups

  • Minority accrual targets: were there explicit minority accrual targets established (yes/no)

Data Source Grant proposal; IRB protocol submission; IRB progress reports
Scoring Identifies the method used to score the measure Rate
Unit of Analysis Data will be collected at a protocol level and aggregated to the institution-level
Comments: