[R] Coxme time-dependent covariate

Hi all, I am using the coxme function to fit random effects survival models. The base survival models show a typical "J" shaped curve where survival drops sharply then plateaus over time interval. I want to include a time covariate which could account for this non-linear decrease in survival o

[R] Change x-axis intervals and labels on cox.zph plot

Hi all, The plot.cox.zph function automatically plots the x-axis, but I would like to change the intervals and labels of my cox.zph plots to 0, 50,100,150, 200. However, I cannot get the function to do so. I tried using the "axis(..." function, but that did not override the existing plot labels. Be