Both Mantel Haenszel and Peto’s methods are popularly used. Mantel-Haenszel Method is a method of stratified analysis of data. In Meta-analysis, this is used to pool together the effects of individual studies. Peto’s Method is similar to Mantel Haenszel’s but computationally simpler.

Use Calculators for General Variance Based Methods for Rate Difference and for the situation when only Relative Risk Estimate and 95% Confidence Interval are provided.