These calculators and tools were developed by Assoc. Prof. Dr. Najib Majdi Yaacob.
Sample size calculator for estimation of mean Sample size calculator for estimation of proportion Sample size calculator for comparison of two independent mean Sample size calculator for comparison of two dependent mean Sample size calculator for comparison of two independent proportion Sample size calculator for correlation analysis Sample size calculator for multivariable (multiple) logistic regression analysis
Simple random sampling Systematic random sampling
OR and RR calculator Treatment effect (absolute and relative risk measures, number needed to treat)
AIC and BIC calculator