Peer review of grant applications in biology and medicine. Reliability, fairness, and validity

This paper examines the peer review procedure of a national science funding organization (Swiss National Science Foundation) by means of the three most frequently studied criteria reliability, fairness, and validity. The analyzed data consists of 496 applications for project-based funding from biology and medicine from the year 1998. Overall reliability is found to be fair with an intraclass correlation coefficient of 0.41 with sizeable differences between biology (0.45) and medicine (0.20). Multiple logistic regression models reveal only scientific performance indicators as significant predictors of the funding decision while all potential sources of bias (gender, age, nationality, and academic status of the applicant, requested amount of funding, and institutional surrounding) are non-significant predictors. Bibliometric analysis provides evidence that the decisions of a public funding organization for basic project-based research are in line with the future publication success of applicants. The paper also argues for an expansion of approaches and methodologies in peer review research by increasingly focusing on process rather than outcome and by including a more diverse set of methods e.g. content analysis. Such an expansion will be necessary to advance peer review research beyond the abundantly treated questions of reliability, fairness, and validity.