[R] SAS and R code hazard ratios

From: <Colleen.Ross_at_kp.org>
Date: Wed 10 Jan 2007 - 17:30:28 GMT


I am new to R and have been comparing CPH survival analysis hazard ratios between R and SAS PhReg. The binary covariates' HRs are the same, however the continuous variables, for example age, have quite different HRs although in the same direction. SAS PhReg produces HRs which are the change in risk for every one increment change in the independent variable.  How do I interpret the HRs produced by R? Thanks much, C

Colleen Ross, MS
Clinical Research Unit

Kaiser Permanente Colorado
(303) 614-1244

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