STR2D: Stata module to compute explained variation for survival models
str2d computes Royston & Sauerbrei (2004)'s R2 statistic based on their index of discrimination (D) for proportional hazards, proportional odds and probit models for censored survival data. The D measure is available for all survival_cmds except streg, distribution(gamma). Note that str2ph has been withdrawn from this package as simulation showed its R2 statistic was excessively biased when censoring became substantial.
|Requires:||Stata version 11|
|Date of creation:||22 Jan 2011|
|Date of revision:|
|Note:||This module should be installed from within Stata by typing "ssc install str2d". Windows users should not attempt to download these files with a web browser.|
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