Suggestion: When new, seek out and follow guides -- in this case, the posting guide (below), which asks that you post your code that failed. In this case, an obvious guess is that you have mis-specified or maybe misspelled one or more of your modeling variables in the call, but without the code, one can't tell.
Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Mon, May 16, 2016 at 8:54 AM, Isaac Singini via R-help <r-help@r-project.org> wrote: > Dear All > I have the following two datasets for joint modeling the survival and > longitudinal data. However when I run the joint model I get the following > error. I am new to R, may someone assist > > Error in `[.data.frame`(lmeObject$data, all.vars(TermsX)) : undefined > columns selected > > Data structure for the longitudinal analysis is: > str(cd4long) > 'data.frame': 464 obs. of 6 variables: > $ id1 : int 1011555 1011555 1011555 1011555 1011558 1011558 1011558 > 1011558 1011568 1011568 ... > $ week : int 2 4 6 12 2 4 6 12 2 4 ... > $ cd4countwk: int 241 137 325 283 235 219 634 465 111 316 ... > $ pred : Factor w/ 2 levels "Placebo","Prednisolone": 2 2 2 2 2 2 2 2 2 > 2 ... > $ outcome : int 0 0 0 0 0 0 0 0 0 0 ... > $ surv4 : int 1137 1137 1137 1137 1097 1097 1097 1097 1129 1129 .. > > Data structure for the survival analysis is as > 'data.frame': 116 obs. of 6 variables: > $ id1 : int 1011555 1011558 1011568 1011575 1011577 1011581 1011592 > 1011957 1011961 1011964 ... > $ week : int 0 0 0 0 0 0 0 0 0 0 ... > $ cd4countwk: int 241 235 111 68 146 516 150 64 13 220 ... > $ outcome : int 0 0 0 0 0 0 0 0 0 0 ... > $ surv4 : int 1137 1097 1129 1099 634 1137 1100 729 731 736 ... > $ pred : int 1 1 1 0 1 1 0 1 0 0 … > > > Thanks > Isaac > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
