- When only
plots=survival is specified on the proc phreg statement, SAS will produce one graph, a “reference curve” of the survival function at the reference level of all categorical predictors and at the mean of all continuous predictors.
https://stats.idre.ucla.edu/sas/seminars/sas-survival/
plots=survival is specified on the proc phreg statement, SAS will produce one graph, a “reference curve” of the survival function at the reference level of all categorical predictors and at the mean of all continuous predictors.