Sensitivity / Specificity Sample Size CalculatorLast updated on December 31, 2024 at 04:28:45 PM / Sample Size Calculators / 1 minute of reading HomeResearchSample Size CalculatorsSensitivity / Specificity Sample Size Calculator Expected sensitivity: Expected specificity: Prevalence of disease (p): Precision (± expected): Confidence level 100(1 - α) %: Expected dropout rate %: Sample size for sensitivity, nsen: Sample size for specificity, nspec: Final sample size (largest), n: Final sample size (with 10% dropout), ndrop: