A site, country, or study recruits more subjects than statistically or operationally planned
DUE TO risk causes
Lack of recruitment control through IXRS, delayed enrollment cut-off communication, or oversight in screening limits
THEN risk impact may result
Increased study costs, ethical concerns, and complications in statistical analysis or data interpretation
Risk indicator
Overrecruitment
Metric
Percentage of overrecruited subjects
Unit
%
What level should be measured
Study, country, site
Purpose
Ensure adherence to planned enrollment targets to maintain ethical standards, control study costs, and prevent deviations from statistical assumptions or safety oversight.
Description
This KRI tracks when actual recruitment exceeds planned levels, helping to identify lapses in enrollment control mechanisms and prevent unnecessary exposure of additional participants.
Formula
(Number of enrolled subjects ÷ Planned number of subjects for the same date) × 100%
Suggested thresholds - high
120%
Suggested thresholds - medium
110%
Associated metric 1
Number of enrolled subjects
Associated metric 2
Number of planned subjects
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