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Sample Size Calculators
for designing clinical research
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One of these calculators may be useful for your purposes:
AUROC - CI given N
AUROC - N given CI
Compare tests using McNemar's
Correlation coefficient - N
Exponential failure rate - CI given N
Exponential failure rate - N given CI
Likelihood ratio - CI given N
Logistic regression - Effect size
Logistic regression - Sample size
Mean - CI given N
Mean - N given CI
Means - Effect size
Means - Effect size (Clustered)
Means - Sample size
Means - Sample size (Clustered)
Paired t-test - Effect size
Paired t-test - Sample size
Pediatric Growth
Posterior Probability of Disease
Predictive value - CI given N
Proportion - CI given N
Proportion - N given CI
Proportions - Effect size
Proportions - Sample size (Standard)
Proportions - Sample size (Alternative)
Prevalence - CI given N
Risk ratio - CI given N
Survival Analysis - Sample Size