> I am a new user of R. I have a dataset with a dependent variable (DV) censored > at different values. The dataset looks like, conditions ..... IDV1 IDV2 DV 1 2 4 89 1 6 6 75 1 4 5 0 ( DV<=70) ... >I do not know how to ajust the code in the VGAM pacakage. I would like to get > some some suggestions. Thank you very much.
I do not know how to adjust the VGAM package, but it is very easy to fit Tobit models using survreg. Let DV1 = the value of DV or the lower threshold and DV2 = 1 if the value is exact and 0 if it is censored. So for the above data DV1 DV2 89 1 75 1 70 0 Then the following will fit a Tobit regression survreg(Surv(DV1, DV2, type='left') ~ x1 + x2 + ..., data=mydata, dist='gaussian') Terry Therneau ______________________________________________ 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.