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Return the special character used to indicate the strata variables of the Cox model
coxSpecialStrata(object)# S3 method for coxph coxSpecialStrata(object)# S3 method for cph coxSpecialStrata(object)# S3 method for phreg coxSpecialStrata(object)
# S3 method for coxph coxSpecialStrata(object)
# S3 method for cph coxSpecialStrata(object)
# S3 method for phreg coxSpecialStrata(object)
The fitted Cox regression model object either obtained with coxph (survival package), cph (rms package), or phreg (mets package).
coxph
cph
phreg