Hello--I'm doing a simple crosstab using dcast:
rawfreq <- dcast(nh11brfs, race3~CHCCOPD, length)
with the results
race3 Yes No NA
1 White non-Hispanic 446 5473 21
2 Other non-Hispanic 29 211 0
3 Hispanic 6 81 1
4 <NA> 10 83 1
How would I modify this call to exclude all missing values; that is, to
obtain
race3 Yes No
1 White non-Hispanic 446 5473
2 Other non-Hispanic 29 211
3 Hispanic 6 81
Apologies if this has come up before, and thanks.
-M.L.
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