Sample Size and Precision in NIH Peer Review
2008

Number of NIH Reviewers Needed for Grant Applications

Sample size: 48 publication Evidence: moderate

Author Information

Author(s): David Kaplan, Nicola Lacetera, Celia Kaplan

Primary Institution: Case Western Reserve University

Hypothesis

How many reviewers are needed to evaluate NIH grant applications with adequate precision?

Conclusion

The study concludes that NIH needs to increase the number of reviewers for grant applications to ensure reliable evaluations.

Supporting Evidence

  • The study found that four reviewers are insufficient for reliable evaluations.
  • An unrealistically high number of reviewers is needed for precise scoring.
  • The current NIH peer review system lacks statistical rigor.

Takeaway

The NIH should have more people review grant applications to make better decisions about funding.

Methodology

Statistical analysis of the number of reviewers needed for reliable evaluations of grant applications.

Potential Biases

The reviewers used in the study were not independent, which could affect the precision of evaluations.

Limitations

The study relied on a model system of peer review rather than actual biomedical research proposals.

Participant Demographics

Undergraduate students evaluated movie proposals.

Statistical Information

Confidence Interval

95%

Digital Object Identifier (DOI)

10.1371/journal.pone.0002761

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