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Re: st: Help with age adjustment


From   Steven Joel Hirsch Samuels <sjhsamuels@earthlink.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Help with age adjustment
Date   Tue, 23 Oct 2007 09:41:46 -0400

Assume your age group and the corresponding proportion variables are "age_gp" "age_prop" and that you have assigned them appropriately to each observation


If you are doing many proportions or ratios, set up the adjustment as options in your -svyset- command:

poststrata(age_gp) postweight(age_prop)


If you don't want to standardize all your results,
1. -svyset- without these options
2. Run a survey estimation command, e.g. -svy: prop- or -svy: ratio- , with the options

stdize(age_gp) stdweight(age_prop)


-Steve


On Oct 23, 2007, at 6:22 AM, jchevan@spfldcol.edu wrote:


I need to age standardize/adjust proportions that I have generated from
survey data.

Theoretically I think I want to work with the stdize command but I don't
have the data set up properly and am not sure how to handle it.

I have the crude proportions directly from the dataset. The age groupings
or strata have been created(18-24, 25-44, 45-64, and >65) with a variable
to represent each group. From census data I have the adjustment weight for
each group (.128810, .401725, .299194, .17021).

I realize I could do the standardization by hand but that would not account
for the complex survey design. Any help would be much appreciated.

Julia Chevan, PT, PhD, MPH, OCS
Associate Professor of Physical Therapy
Department of Physical Therapy
263 Alden Street
Springfield, MA 01109-3797
(413) 748-3569



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Steven  Samuels

sjhsamuels@earthlink.net
18 Cantine's Island
Saugerties, NY 12477
Phone: 845-246-0774
EFax: 208-498-7441




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