cox.rvph - Remedy for Violations of the Proportional Hazards Assumption in
Cox Proportional Hazards Models
Remedying proportional hazards assumption violations of a
Cox proportional hazards model using stepwise split-point and
time-varying coefficient methods based on Cox (1972)
<doi:10.1111/j.2517-6161.1972.tb00899.x> and Klein and
Moeschberger (1997) <doi:10.1007/978-1-4757-2728-9>.
