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st: Missing indicator method for partially mising baseline measurements in randomized trials


From   Etan Lakam <[email protected]>
To   [email protected]
Subject   st: Missing indicator method for partially mising baseline measurements in randomized trials
Date   Fri, 17 Jul 2009 17:32:45 +0100

Dear Statalisters,
I am analysis trial data from a randomized trial,  comparing the the
body mass index (bmi2)  bewteen the grousp at follow-up adjusting for
the baseline values of bmi (bmi1)
Some of the values of bmi at baseline are missing and I was advised
to use the missing indicator method to account for the missing values
of bmi at baseline, thus to have a  a more efficient result. Being a
movice in the field of missing data, I don not have a clue on how to
do this is Stata.
At the moment this is how my model stands: xi: regress bmi2  bmi1
i.randomgroup. How do I include the missing indicator in this model?
Thnak you in advance for your help
Etan
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