Re: [R] Trend test for hazard ratios

Hi Terry, thank you for your suggestion. I tried to do it the way that you described. I fitted my Cox model with strata and I get coefficients and P values for my ZlnGalectin in the different strata (see summary below). So am not so familiar with R so please excuse my perhaps stupid questions but

[R] Trend test for hazard ratios

Hello, I have the following problem. I stratified my patient cohort into three ordered groups and performed multivariate adjusted Cox regression analysis on each group separately. Now I would like to calculate a p for trend across the hazard ratios that I got for the three groups. How can I do tha