Re: [R] understanding the output from survival analysis

2009-03-10 Thread Terry Therneau
> Why do I get different sign of the coefficients of covariates when I run the > semi-parametric proportional hazard model (coxph) compared to the parametric > proportional hazard model (survreg)? Survreg models the time till death, a postive coefficient --> a longer time. Coxph models the dea

Re: [R] understanding the output from survival analysis

2009-03-10 Thread Chris Andrews
Ullrika Sahlin ekol.lu.se> writes: > > Why do I get different sign of the coefficients of covariates when I run the > semi-parametric proportional hazard model (coxph) compared to the parametric > proportional hazard model (survreg)? > > Anyone with experience in extracting information from su

[R] understanding the output from survival analysis

2009-03-09 Thread Ullrika Sahlin
Why do I get different sign of the coefficients of covariates when I run the semi-parametric proportional hazard model (coxph) compared to the parametric proportional hazard model (survreg)? Anyone with experience in extracting information form survreg to make predictions are free to contact me