STQUANT: Stata module to estimate quantiles for survival time

Abstract

stquant presents point and interval estimates of quantiles for survival time. Confidence intervals are obtained by two methods: large sample normal distribution of the estimated quantile and that one proposed by Brookmeyer and Crowley. Both show limits. The first one has not yet been fully studied and I noted some inconsistencies for small samples in the right tail of the survivorship function. The latter method is recommended in the literature to be employed when there are no tied survival times. This is version 2.01 of the software.survival analysis, quantile estimation