Test result-based sampling: an efficient design for estimating the accuracy of patient safety indicators.


OBJECTIVE Accuracy studies of Patient Safety Indicators (PSIs) are critical but limited by the large samples required due to low occurrence of most events. We tested a sampling design based on test results (verification-biased sampling [VBS]) that minimizes the number of subjects to be verified. METHODS We considered 3 real PSIs, whose rates were… (More)
DOI: 10.1177/0272989X11426176