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Re: st: Which weight


From   Steven Joel Hirsch Samuels <sjhsamuels@earthlink.net>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Which weight
Date   Sun, 7 Oct 2007 11:32:29 -0400

Nikkos, for a 'longitudinal' analysis like this, the general rule is to use the earliest weight. The sampling probability' is set when the unit is first selected. The final weights differ from year to year because of post-stratification adjustments. To properly specify - svyset- you will need stratum and clustering information from the study documentation.


Steven


On Oct 7, 2007, at 7:06 AM, Nikolaos Kanellopoulos wrote:



I have a dataset in wide format. I want to see the correlation between x1
and x2 (the same variable in two different years). I want to use weights to
correct for unequal sampling probabilities. Should I use the weights of the
first year or the weights from the second?

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




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