st: how to stack some variables and duplicate others

[Mariano Matias Iberico <matias.iberico@gmail.com>]

Dear all,

I am looking at data on adherence to 3 month treatment.
I have data on households that have been grouped into two categories by
age 0-15 and 15-18  the dataset looks roughly like this
houseID num015 m1_15 m2_15 m3_15 num1518 m1_18 m2_18 m3_18 income edu
1 5 4 3 3 4 4 4 0 100 1
2 2 2 2 1 0 0 0 0 110 2
3 0 0 0 0 1 1 1 1 1000 6
. . .


I would like to -stack-num015-m3_18, into(ptnum m1 m2 m3)
When I do this I loose the income and edu data, which I would like to
duplicate as shown below.

houseID ptnum m1 m2 m3 income edu _stack
1 5 4 3 3 100 1 1
1 4 4 4 0 100 1 2
2 2 2 2 1 110 2 1
2 0 0 0 0 110 2 2
3 0 0 0 0 1000 6 1
3 1 1 1 1 1000 6 2
. . .


The next step for this is an -expand-ptnum, and then I have a code written
to change m1-m3 into dummy variables to see how far along each pt of each
age got in the treatment.

Any suggestions are welcome as I have been banging my head against the
wall with this one for some time!

Regards,

Matias


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