Hi, I have a fairly simple question. I would like to use the survival package to perform an analysis on data where an event can have occurred before individuals were recruited into a study. I'm not sure how to do this using the Surv() function. I would have a date of an event and then the enrolment date would be after that. How do I put these two dates into the survival function?
Thank you, Natalie ----- Natalie Van Zuydam PhD Student University of Dundee nvanzuy...@dundee.ac.uk -- View this message in context: http://r.789695.n4.nabble.com/Cox-s-regression-analysis-with-Left-truncated-data-tp3692114p3692114.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.
