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Re: st: Which weight
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?
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