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STR2D: Stata module to compute explained variation for survival models


  • Patrick Royston

    () (MRC Clinical Trials Unit at UCL, London)


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 Note that str2ph has been withdrawn from this package as simulation showed its R2 statistic was excessively biased when censoring became substantial.

Suggested Citation

  • Patrick Royston, 2011. "STR2D: Stata module to compute explained variation for survival models," Statistical Software Components S457228, Boston College Department of Economics.
  • Handle: RePEc:boc:bocode:s457228
    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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