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st: Pscore command
From
Nyasha Tirivayi <[email protected]>
To
[email protected]
Subject
st: Pscore command
Date
Fri, 12 Nov 2010 12:46:57 +0100
Hello
I used the pscore command for propensity score matching. The balancing
property was satisfied after the model had 14 covariates (from a start
point of 20, pasmatch2 also balances with less covariates). Someone
has said these covariates are not enough to satisfy the conditional
independence assumption. Is there a minimum number of covariates
needed in propensity score matching?
Kindly advise
Nyasha
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