I have a dataset with plenty of variables and lots of missing data. As far
as I understand, R automatically removes subjects with missing values.
I'm trying to fit a mixed effects model, adding covariate by covariate. I
suspect that my sample gets smaller and smaller each time I add a
covariate, because more and more lines get deleted.
Is there a way of displaying how many subjects are "left" in each analysis?
Thanks
E
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