[R] NA's in multiple choice summary table in Hmisc

Erich Studerus, Psychiatrische Uni-Klinik erich.studerus at bli.uzh.ch
Thu Oct 9 00:49:20 CEST 2008


I have a set of 30 binary variables measuring side effects after drug 
treatment. Since each subject can have multiple side effects, I want to 
display these side effects in a multiple choice table. I'm using the summary 
and mChoice functions of the Hmisc package, because it produces nicely 
formatted latex tables. My problem is, that table includes a category for 
people who have at least one absent symptom and I don't know how to exclude 

Here's a very easy reproducible example:

Descriptive Statistics  (N=3)

|                   |       |
|Symptom1 : Headache|67% (2)|
|    NA             |67% (2)|
|    Anxiety        |33% (1)|

Now, I want to either completely exclude the NA category or - if included - 
it should count the number of people who have NA's in all symptoms rather 
than in a single symptom. In the example above, the NA's should be 1 instead 
of 2 cases.
I tried to specify na.include=FALSE but it does not work.

Any help is highly appreciated.


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