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Re: st: Descriptive statistics - counting aspects of a variable


From   Abhimanyu Arora <abhimanyu.arora1987@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Descriptive statistics - counting aspects of a variable
Date   Sun, 3 Jun 2012 16:55:55 +0200

I guess you have to type in
count if XX=="618A"
since it is a string variable
Cheers
Abhimanyu
PS-Frankly, the phrase "stata not being able to tell" without the
displayed output might be a bit hazy for users like me



On Sun, Jun 3, 2012 at 4:24 PM, Amal Khanolkar <Amal.Khanolkar@ki.se> wrote:
> Hello all,
>
> I have a variable XX that describes various diagnoses that my subjects might have. Diagnoses are coded using the usual ICD 8-10 codes. While most diagnoses are just numerical, some end with an alphabet, for e.g. 618A or 720H.
>
> I can ask Stata to tell me how many subjects in my dataset have diagnoses 618 by:
>
> count if XX==616
>
> However how do I find out how many have a diagnoses with numbers in combination with letters (like 618A). Stata isn't able to tell me using the 'count' or 'sum' commands as above.
>
> Thanks,
>
> /Amal.
>
>
>
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