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Re: st: How to svyset when strata are used in some groups and not others
From
Stas Kolenikov <[email protected]>
To
[email protected]
Subject
Re: st: How to svyset when strata are used in some groups and not others
Date
Fri, 2 Jul 2010 14:36:50 -0500
If Louise sampled other 3 types lumping them together, then Steve's
recommendation is appropriate. If sampling was performed within each
of those remaining types, then the strata variable will have 6 (strata
in the most common type of hospitals) + 3 (other types of hospitals) =
9 levels.
On Fri, Jul 2, 2010 at 11:18 AM, Steve Samuels <[email protected]> wrote:
> Louise-- create a stratum variable with 7 values: 1-6 for the
> hospitals of the first type, and 7 for the other three types, and use
> that in the strata() option of -svyset-
>
> Steve
>
> On Fri, Jul 2, 2010 at 12:00 PM, Louise Linsell
> <[email protected]> wrote:
>> I have a dataset with 4 different types of hospital, and would like to compare binary outcomes between them using logistic regression. However for the first type (the most common), hospitals were divided into 6 strata (based on size and SES) and a random sample was taken from each strata. For the other 3 types of hospital we sampled all hospitals. My question is, how to use the svyset command when a different sampling strategy was used in one group?
>>
>> LL
>>
>>
>>
>>
>> *
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>> * http://www.ats.ucla.edu/stat/stata/
>>
>
>
>
> --
> Steven Samuels
> [email protected]
> 18 Cantine's Island
> Saugerties NY 12477
> USA
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>
> *
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>
--
Stas Kolenikov, also found at http://stas.kolenikov.name
Small print: I use this email account for mailing lists only.
*
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