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.

How to cite this page

MedCalc Software Ltd. Sample size calculator for Area under ROC curve | MedCalc. https://www.medcalc.org/en/calc/sample-size-area-under-roc-curve.php (Version 23.6.1; accessed July 14, 2026)

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