--- On Mon, 9/11/09, Jia Li wrote:
> Thanks for your suggestions. I ran separate regressions
> using completely different data sets: one uses consumer
> expenditure survey to derive relationships between income
> and expenditure; and I then use the estimated coefficients
> in my dataset to establish estimates of expenditure based on
> income. I could of course just input the estimated
> coefficients, but I was wondering if there are more
> efficient ways to do this. I will experiment with the
> commands you suggested and let you know what i find out.
I read your question as follows:
I have two datasets, a and b. I want to analyse dataset a,
but it does not contain the variable expenditure, but this
variable is present in dataset b. So, I want to impute
expenditure in dataset a using information from dataset b.
Could you please clarify your question if this interpretation
is not correct? Otherwise, continue reading for my remarks.
If I were to do such a thing, I would start by -append-ing
the two datasents to form a single dataset, and than do
multiple imputation. you can find resources on how to do that
in Stata by typing in Stata -findit multiple imputation-.
-- Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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