SciExpert service
Sample Size Calculation
Know exactly how many participants your study needs
Determine the number of participants needed to detect a meaningful effect with statistical confidence, so you neither waste resources nor end up underpowered. Run it self-serve in the workspace or hand it to a verified expert.
- • Power analysis for RCTs, cross-sectional, case-control and cohort designs
- • Sample size for hypothesis tests, confidence intervals and equivalence / non-inferiority
- • Attrition adjustments, clustered designs and multiple comparison corrections
- • Written justification paragraph you can paste into a protocol or thesis