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st: -doseresponse-


From   "Li, Jilan" <jilanli@email.unc.edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   st: -doseresponse-
Date   Fri, 6 Jan 2012 13:53:05 +0000

Hi,

Happy new year!

I am using -doseresponse-. I have the following questions:

1. It does not allow for the assessment of common support. Do you have any suggestion on how to exam common support when the treatment is continuous?

2. It only conducts balance check after applying the GPS. How can we know if the balance is improved or not? Or how to check balance before applying GPS accordingly?

3. It is an ideal situation when balance is acheived on all covariates. However, it is often the case that some covarites may remain unbalanced. One strategy is to add the unbalanced covariate into the outcome model together with the GPS. Is it easy to modify the program so it can allow adding unbalanced covarites to the outcome model? The original model only includes T and GPS and their higher-order terms and interactions.

Your help is so greatly appreicated!

Jilan
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