On Jan 13, 2014, at 10:50 AM, Phil Stevenson wrote: > I am using the coxph() function (from the 'survival' package) for a data > set that requires one of the covariates to be treated as time-dependent. > The issue is with this data set is there are some covariate values that are > missing at the time point when the event occurs. > > For example: > > Person A: > > Day time-dependent covariate deathday status > > 1 34 6 > 0 > > 2 47 6 > 0 > > 3 78 6 > 0 > > 4 29 6 > 0 > > 5 NA 6 > 0 > > 6 NA 6 > 1 > > > > R throws out this event due to the missing time-dependent covariate at day > 6. Is there a way I can keep this event without filling in a covariate > value at day 6? >
What is your expectation concerning what _should_ happen? > [[alternative HTML version deleted]] -- David Winsemius Alameda, CA, USA ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
