BMJ (Clinical Research Edition)
Geisel School of Medicine
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).
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.
Dartmouth Digital Commons Citation
Wennberg, J. E.; Staiger, D. O.; Sharp, S. M.; and Gottlieb, D. J., "Observational Intensity Bias Associated with Illness Adjustment: Cross Sectional Analysis of Insurance Claims" (2013). Dartmouth Scholarship. 672.