Good morning,

I have a basic question. I'm starting with stata running a cox model
xi:stcox i.tertile_smoke age sex ...
I'd like to plot the HR of the different tertiles of smoke with the 95% confidence interval as I have in the output of STATA. I tried margins but there are predictive values. I'd like to plot the exact 95% CI that appears in the output of stata for my tertiles of smoke.

I know it's a very basic thing...but any help would be +++ appreciated !
thank you a lot!

Cheng LY