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| From | Nyasha Tirivayi <ntirivayi@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| 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 * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/