How are percentiles calculated and what do they mean?
The percentile rank of an application is determined by its position among the reviewed applications within the base of applications reviewed in the current round plus two rounds of review, when the review is associated with a standing review committee and involves a R01 application. The percentile base includes all applications reviewed by a scientific review group regardless of whether the application was scored, not discussed, or not recommended for further consideration. In some cases, the base includes all eligible NIDA-reviewed or CSR-reviewed applications. The use of three rounds minimizes round-to-round variation in addition to providing the stability of a larger sample. The percentile ranking of an application is a major factor, but not the only one, in determining whether it will be funded. Not all types of applications receive percentiles. For example, applications submitted in response to a request for applications (RFA) and non-R01 applications impact scores are not percent
