A new method to isolate local-area practice styles in prescription use as the basis for instrumental variables in comparative effectiveness research.


BACKGROUND Knowledge of whether particular prescription drugs for particular conditions are overused or underused is needed to attain a more efficient healthcare system. The portion of geographic variation in prescription drug use representing "practice style" may provide natural experiments as instrumental variables to address this knowledge gap… (More)
DOI: 10.1097/MLR.0b013e3181e41bb2

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