d Materials by Mario A. Cleves d Materials created by Mario A. Cleves while working at StataCorp t .. back to other contributors p median Median test for K independent samples * p genhw Hardy-Weinberg equilibrium test p robvar Robust test for the equality of variances p stgrby Graph median and mean survival times * p gencc Case-control studies for genetic epidemiologist p logitem Logit reg. when outcome is measured with uncertainty p roctab ROC commands (updates to STB-52 sg120) p weibhet Weibull regression with gamma heterogeneity p lncure Lognormal cure model (Beta version) p stpyear Computes person-years, incidence rates or SMR