Biomedical Sample Size Calculator

👋 Welcome to the Biomedical Sample Size Calculator

Choose the type of statistical analysis you need for your research study

📊

Estimation Studies

Calculate sample sizes for estimating population parameters with specific precision

🔬

Hypothesis Testing

Calculate sample sizes for comparing groups and testing statistical hypotheses

⏱️

Rates & Survival Analysis

Calculate sample sizes for time-to-event and rate comparison studies

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💡 When to Use This Test

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