Thank you for your help,
I had actually tried already the [iw=weight01]. The percentages are
exactly the same with both [aw= ] and [iw= ]. The only thing that does
change is the total frequencies. Thank you for pointing it out in your
e-mail, Iu had not actually noticed it.
Adriana
(I am a she, by the way)
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Richard
Williams
Sent: 18 March 2004 16:34
To: [email protected]
Subject: Re: st: RE: Using weights with tabulate command
At 04:11 PM 3/18/2004 +0000, Nick Cox wrote:
>With -tabulate-, weights are assumed to be frequency
>weights unless otherwise indicated. Your weights
>sound like analytic weights.
>
>. by country: tab illness [aw=weight01]
>
>With -summarize- weights are assumed to be analytic
>weights unless otherwise indicated.
Also, for the purposes of the tab command, he might want [iw=weight01].
It
depends on what the goal is. This would give you the estimated number
of
households in each country that have a particular characteristic, e.g.
there are are an estimated 400,000 people in the UK with illness 1. You
might get Ns in the millions, even though the sample is only a few
thousand. With aweights, the weights will be rescaled to reflect the
sample Ns. -help weights- provides more info, even better is section
23.16
of the User's Guide. Stata's weighting options are more extensive than
what I was used to so reading through that section was very helpful to
me.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
FAX: (574)288-4373
HOME: (574)289-5227
EMAIL: [email protected]
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
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