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...el: modelname <- coxph(Surv ~ Factor1 + Factor2 + Covariate, data = data) If I then ask for: baselineA <- basehaz(modelname, centered=FALSE) I am fairly certain that baselineA will provide me with the cumulative hazard evaluated at Factor1 = 0, Factor2 = 0, Covariate = 0. Yet, if I ask for: baselineB <- basehaz(modelname, centered=TRUE) I know that baselineB will evaluate the cumulative hazard at Covariate = 50, but am uncertain as to what it does with the factors. I would not think that the function would attempt to average a "factor"; however, I cannot find any documentation to...