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Abstract Details
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Activity Number:
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444
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Type:
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Invited
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Date/Time:
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Wednesday, August 3, 2011 : 8:30 AM to 10:20 AM
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Sponsor:
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ENAR
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| Abstract - #300251 |
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Title:
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Using the Instrumental Propensity Score in Observational Studies for Causal Effects
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Author(s):
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Jing Cheng*+
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Companies:
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University of California at San Francisco
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Address:
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3333 California St, Ste 495, San Francisco, CA, 94143, USA
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Keywords:
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Causal effect ;
instrumental variable ;
instrumental propensity score ;
obersvational studies
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Abstract:
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In observational studies, investigators are often concerned about unmeasured confounding in the evaluation of the effect of a program/exposure/treatment. The instrumental variable approach is valuable to address unmeasured confounding and is desired in many applications. However, many existing IV methods require the IV to be independent of all measured and unmeasured confounders and investigators often have difficulty to find a good IV. In this study, we propose to use instrumental propensity score to relax the assumptions for an IV to be valid and then use subclassification or weighting to conduct inference on causal effects.
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The address information is for the authors that have a + after their name.
Authors who are presenting talks have a * after their name.
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