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st: RE: Transition tables

From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   st: RE: Transition tables
Date   Thu, 15 May 2008 17:24:11 +0100

Work on the subset of the data that is just waves 1, 7, 12. Map to 1, 2,
3 and label 1, 7, 12 if necessary. 

[email protected] 

sara khan

I am writing to ask for advice regarding transition tables using long
data. I have 12 waves of data and want to work out entries and exits
from poverty. I have created the relevant variables using a lag of 1
period however, how would I modify this to allow me to create specific
transition tables for entries and exits between wave1 and wave 7, and
then wave7 and wave12 (rather than the previous period only as in the
code below?

ge lagpov=L.ps60
lab var lagpov "pov status, previous interview"
lab val lagpov ps60
ta lagpov ps60, row col

ta lagpov ps60 if wave==2, row col

ge enterpov=0 if L.ps60==0
replace enterpov=1 if L.ps60==0 & ps60==1
lab var enterpov "entered poverty?"
lab def enterpov 0 "stayed non-poor" 1 "entered poverty"
lab val enterpov enterpov

ge exitpov=0 if L.ps60==1
replace exitpov=1 if L.ps60==1 & ps60==0
lab var exitpov "left poverty?"
lab def exitpov 0 "stayed poor" 1 "left poverty"
lab val exitpov exitpov

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