Document Type

Article

Publication Date

2-21-2013

Publication Title

BMJ (Clinical Research Edition)

Department

Geisel School of Medicine

Abstract

Objective: To determine the bias associated with frequency of visits by physicians in adjusting for illness, using diagnoses recorded in administrative databases.

Setting: Claims data from the US Medicare program for services provided in 2007 among 306 US hospital referral regions.

Design: Cross sectional analysis. Participants 20% sample of fee for service Medicare beneficiaries residing in the United States in 2007 (n=5 153 877).

DOI

10.1136/bmj.f549

Original Citation

Wennberg JE, Staiger DO, Sharp SM, Gottlieb DJ, Bevan G, McPherson K, Welch HG. Observational intensity bias associated with illness adjustment: cross sectional analysis of insurance claims. BMJ. 2013 Feb 21;346:f549. doi: 10.1136/bmj.f549. PMID: 23430282; PMCID: PMC3578417.

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