R, Survival Analysis, Bootstrapping, Lasso Regression, Cox Regression.
output: coef — estimated hazard coefficient on the log scale exp(coef) — the hazard ratio (HR). Here, 4.9 means 490%. So, TREAT2, compared to TREAT1, increase the hazard by almost 500%! exp(-coef) — inverse hazard ratio, which is the HR for TREAT1. The concordance statistic is an ROC-statistic for