Sample Size Calculator
Pick your study design from 30 epidemiological designs, enter a few numbers, and get the formula, the worked calculation, a sensitivity table and a ready-to-paste methods sentence.
- 30 study designs: cross-sectional, case-control, cohort, RCTs, diagnostic accuracy and more
- Shows the formula and every calculation step
- Sensitivity table for power and margin choices
- Methods-section sentence you can paste into your proposal
