Cross-Sectional Study Sample Size Calculator

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Study Parameters
Basic parameters for prevalence estimation in cross-sectional studies

Expected proportion of the population with the condition or characteristic of interest

%
💡 Example: 50.0 for 50%

Acceptable precision around the prevalence estimate (half-width of confidence interval)

%
💡 Example: 50.0 for 50%

Level of confidence for the prevalence estimate