coxrt package fits Cox regression based on retrospectively ascertained time-to-event
data. The method uses Inverse-Probability-Weighting (IPW) estimating equations with stabilized weights as described
in Vakulenko-Lagun, Mandel, and Betensky,
Inverse-Probability-Weighting Methods for Cox Regression with Right Truncated Data (submitted to Biometrics, 2018).
coxrt package provides two functions:
coxph.RT that assumes positivity and
coxph.RT.a0 that allows for adjustment of estimation under violation of positivity.
coxrt package can be installed by
The examples of when and how to use
coxrt package are here.