Datasets

2 datasets

HealthData.Gov

Sample Size and Population Estimates Tables (Prevalence Estimates) - 8.1 to 8.13

These detailed tables show sample sizes and population estimates from the 2011 National Survey on Drug Use and Health (NSDUH). Samples sizes and population estimates are provided by age group, gender, race/ethnicity,…

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Updated Oct 29, 2026

HealthData.Gov

Sample size requirements for case-control study designs

Background Published formulas for case-control designs provide sample sizes required to determine that a given disease-exposure odds ratio is significantly different from one, adjusting for a potential confounder and…

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Updated Oct 29, 2026