Extracting non-zero coefficients in glmnet in R. 1. It shows so-called hazard ratios (HR) which are derived from the model for all covariates that we included in the formula in coxph . . In the current article, we continue the series by describing methods to evaluate the validity of the Cox model assumptions.. R topics documented: 3 plot.survﬁt . . . . If the proportional hazards assumption holds then the true beta(t) function would be a horizontal line. Hot Network Questions Pass a variable to Javascript directly from