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Profiling Care Provided by Different Groups of Physicians: Effects of Patient Case-Mix (Bias) and Physician-Level Clustering on Quality Assessment Results
Sheldon Greenfield, MD; Sherrie H. Kaplan, PhD, MPH; Richard Kahn, PhD; John Ninomiya, MS; John L. Griffith, PhD
Annals of Internal Medicine 2002;136:111-121.
doi:10.7326/0003-4819-136-2-200201150-00008
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