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Sample Size Calculator (web)

Sensitivity/Specificity - Estimation

Expected sensitivity:
Expected specificity:
Prevalence of disease (p):
Precision (± expected):
Confidence level 100(1 - α): %
Expected dropout rate: %

Sample size for sensitivity, n_sen =
Sample size for specificity, n_spec =
Final sample size (largest), n =
Final sample size (with 10% dropout), n_drop =

Formula reference:

Buderer, N. M. F. (1996). Statistical methodology: I. Incorporating the prevalence of disease into the sample size calculation for sensitivity and specificity. Academic Emergency Medicine, 3(9), 895-900.

Suggested reference:

APA: Arifin, W. N. (). Sample size calculator (web). Retrieved from http://wnarifin.github.io

Vancouver: Arifin WN. Sample size calculator (web) [Internet]. [cited ]. Available from: http://wnarifin.github.io

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