Re: st: computing percentages

[David Kantor <dkantor@jhu.edu>]

At 09:36 AM 4/28/2004 -0500, Mike Merten wrote:
> I am using the following command:
>
> g nonmetro=hmsa_r==2
>
> g total=hmsa_r==1 | hmsa_r==2 | hmsa_r==3
>
> gen pnonmetro=nonmetro/total
>
> I want the "pnonmetro" variable to be expressed in terms of percentage, 
> from the resulting nonmetro/total. How do I do this?
>
> Thanks,
> [...]
As Nick pointed out, you probably want to aggregate over the dataset or 
parts thereof, counting up and dividing  (count of  nonmetro) / (count of 
total) .

But note that pnonmetro is valued either 0, 1, or missing.  If you take its 
mean (-sum pnonmetro-), I believe the result will be the same as the 
quotient of counts as above.

(I've left off the factor of 100 -- a cosmetic change.)

I hope this helps.
-- David


David Kantor
Institute for Policy Studies
Johns Hopkins University
dkantor@jhu.edu
410-516-5404

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