There's usually an "exclude" option to the tabulate commands, which
defaults to excluding NA's. To fix, just feed it an empty vector:
, exclude=c()
Ari
On Sat, Mar 29, 2008 at 1:12 PM, <johns18 at fas.harvard.edu> wrote:
Does anyone know how to make R include missing data as
its own row in
contingency tables? thanks!
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