[R] SAS and R code hazard ratios

[Peter Dalgaard]

Colleen.Ross at kp.org wrote:
> Greetings,
>
> 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
>
>   
I'm not aware of peculiarities. You're not giving us much to go on 
though. In fact, not even the function used to fit the model with.
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>   
Exactly...