While your queries certainly intersect R , they are mostly about statistical methodology for this special kind of missing data. This list is mostly about R programming. I think you would do better posting to a statistics list, like stats.stackexchange.com . Advice there might bring you back here to ask about R implementation, but that's not your current concern.
Cheers, Bert On Monday, March 7, 2016, Giuseppe Biondi Zoccai <gbiondizoc...@gmail.com> wrote: > I am using the mice package to impute some missing values, and it work > nicely. > I am facing a tricky strategic question though. > Basically, I am working on predictors of myocardial infarction, with all > patients having baseline features (eg age, gender), despite a few missing > values. > Some patients have performed also a stress test, with specific continous > details (eg stress duration), but others haven't. > What should I do to capture the information associated with stress test > features? > A complete case analysis will of course exclude all those without a stress > test (roughly 50%). > Is it reasonable to impute with mice the stress features among also those > who did not undergo any stress test? > Or should I best create a factor variable such as stress_status (0- no > stress, 1-stress with low tolerance, 2-stress with high tolerance, and so > forth)? > Thanks for the help > Giuseppe > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org <javascript:;> 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. > -- 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 ) [[alternative HTML version deleted]] ______________________________________________ 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.
