Free statistical calculators

Sample size for Area under ROC curve

Input
Type I error - Alpha:
Type II error - Beta:

Area under ROC curve:
Null hypothesis value:
Ratio of sample sizes in negative/positive groups:
Result
Number of cases required in positive group:
Number of cases required in negative group:
Total sample size (2 groups together):

For details, see the MedCalc manual: Sample size: Area under ROC curve.

MedCalc Software Ltd. Sample size for Area under ROC curve. https://www.medcalc.org/calc/sample-size-area-under-roc-curve.php (Version 23.2.1; accessed March 25, 2025)