I am using svylogit followed by adjust, using pweights. When I try to set
certain factors to the grand mean when using adjust, stata seems to be
forgetting about the pweights.
Here is a simple example to illustrate my problem (using logit rather than
svylogit for simplicity).
Using the following data:
y,factor1,factor2,w
1,0,0,10
0,0,0,12
1,1,0,100
0,1,0,130
1,0,1,5
0,0,1,20
1,1,1,50
0,1,1,250
I tried the following commands:
logit y factor1 factor2 [pweight=w]
adjust factor1, by(factor2)
The adjust results tell me that the average if factor 1 is 0.5, which it
clearly isn't if one uses pweights (I calculate that it is 0.92)
Am I missing something? Perhaps for my "real" data I need to go through by
hand to calculate the average value of each factor, and specify it myself.
Thanks in advance for any suggestions, and apologies if this is a stupid
question - I'm fairly new to Stata.
Catherine Watt
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Dr Catherine Watt
Epidemiologist
Stop TB, Communicable Diseases
World Health Organization
CH-1211 Geneva 27
Switzerland
[email protected]
tel. +41 22 791 2680
fax +41 22 791 4268
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