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st: generating age variable


From   Kim Price <kprice@hsph.harvard.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: generating age variable
Date   Fri, 22 Nov 2002 14:31:53 -0500

Hi,

I would like to create an age variable that subtracts each dob from a particular date. I looked at the reference guides and web page, but they were not helpful in answering this question. I've tried the following, but they both create missing values.

1)
generate age=mdy(4,15,01-dob)/365.25

and

2)
generate smpdate=mdy(4,1,01);

format smpdate %d;

gen age=(smpdate-dob)/365.25;

Any suggestions will be greatly appreciated.

Thanks,
Kim



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