There is some mismatch of example and discussion here but I think this
is what you mean here.
gen byte whichage = .
qui forval i = 1/4 {
replace whichage = `i' if age`i' == 1
}
OR
gen byte whichage = age1 + 2 * age2 + 3 * age3 + 4 * age4
Nick
[email protected]
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of sara khan
Sent: 05 February 2008 21:36
To: [email protected]
Subject: st: Creating a new variable by combining several
Dear Statalisters
I would be most gratfeul if someone could advise me on the following:
I am working with long data and need to create a variable that
summarises information from several categorical variables. For
example, for the variables hdage1-hdage4, I want to create a single
variable that tells me which category each pid belongs to (the
opposite of the command (ta var, ge(var*) )) . Thus, for the first
person, I want a variable that lists age3 at each wave, for the second
age3 in the same variable etc.
Any help would be most apprecaited.
Regards
Sara
+-----------------------------------------------------+
pid wave age1 age2 age3 age4
-----------------------------------------------------
22. 10014608 1 0 0 0 1
23. 10014608 2 0 0 0 1
24. 10014608 3 0 0 0 1
25. 10014608 6 0 0 0 1
26. 10014608 8 0 0 0 1
27. 10014608 9 0 0 0 1
28. 10014608 10 0 0 0 1
29. 10014608 12 0 0 0 1
-----------------------------------------------------
30. 10016813 2 0 0 1 0
31. 10016813 4 0 0 1 0
32. 10016813 9 0 0 1 0
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