Date:         Wed, 8 Apr 1998 11:16:49 -0700
Reply-To:     John Oehlert <joehlert@LELAND.STANFORD.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         John Oehlert <joehlert@LELAND.STANFORD.EDU>
Subject:      NHANES sampling weights, PSU and Strata
Content-Type: text/plain; charset="us-ascii"

Hi All,
 
I am just starting a project using the NHANES-I (National Health and
Nutrition Examination Survey) data. NHANES is a three-stage, stratified
probability sample.  The data contains a series of weights, PSUs (primary
sampling units) and strata. I am at a complete loss as to how to use these
weights, etc.. The project I am working on involves computing the
prevalence of a rare disease so the weighting will be especially important.
Some of the NHANES documentation refers to a number of software packages
specially designed to deal with these issues. I am pretty much restricted
to working either in SAS or S-Plus. ANY help or advice the group can give
me would be greatly appreciated. Especially SAS code or references.
 
I will summarize and post to the group any replies received.
 
Thanks in advance.
John
 
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John Oehlert
Statistical Programmer/Systems Analyst
Division of Biostatistics
HRP Redwood Building, Rm T100
Stanford, California 94305-5405
 
Voice: (650) 725-2925
Fax:   (650) 725-6951
Email: joehlert@leland.stanford.edu
 
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