Proportional excess hazards
比例超额风险模型
Assume that the excess risk of an individual over a known background rate can be well approximated by the proportional hazards model. Such might be the case for a cohort at risk of dying from causes that are independent of those that affect the general population. We propose estimators for both the regression parameters and the nonparametric baseline hazard function. The estimators are shown to be consistent, asymptotically normal and efficient. Analogues of the Wald, score…