Type-Specific Failure Rate and Hazard Rate on Competing Risks
Data // Given a failure type, the function computes covariate-
specific probability of failure over time and covariate-
specific conditional hazard rate based on possibly right-
censored competing risk data. Specifically, it computes the
non-parametric maximum-likelihood estimates of these quantities
and their asymptotic variances in a semi-parametric mixture
model for competing-risks data, as described in Chang et al.
(2007a).