Propensity Score Matching - Statpower
Propensity Score Matching - Statpower
Propensity Score Matching - Statpower
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IntroductionModeling the CovariatesSubclassification<strong>Matching</strong>Balancing <strong>Score</strong>sThe <strong>Propensity</strong> <strong>Score</strong><strong>Matching</strong> MethodsUsing <strong>Propensity</strong> <strong>Score</strong>s – A General StrategyAn ExampleDifficulties with SubclassificationSubclassification has advantages:It forces overlapIt imposes roughly the same covariate distribution withinsubclassesHowever, it has disadvantages as well:When categorizing a continuous covariate, someinformation will be lostThe strategy is very difficult to implement with severalcovariates at onceMultilevel<strong>Propensity</strong> <strong>Score</strong> <strong>Matching</strong>
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