In STATA, multiple observations correspond to the same individual, the cluster( ) option can be employed to request that the analysis be clustered by individual.
Any suggestion with aftreg? Thanks, J -- View this message in context: http://r.789695.n4.nabble.com/pooled-hazard-model-with-aftreg-and-time-dependent-variables-tp3758805p3760440.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.