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st: RE: replace missing values in different waves


From   b.v.m@gmx.ch
To   statalist@hsphsun2.harvard.edu
Subject   st: RE: replace missing values in different waves
Date   Wed, 26 Dec 2012 03:51:22 +0100

my dataset looks like this:


personnumber    Gender   different other variables
100             1
100             .
100             .
101             2
101             2
101             .
102             2
102             .
102             .

for each person i have 3 waves in the dataset. now i want to replace the missing values (.) in with the value of the first wave. (e.g. 1 for person 100, 2 for person 101, 2 for person 3).
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