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RAND Corp.
Published: Tuesday, September 21, 2010 - 08:48
(RAND Corp.: Santa Monica, CA) -- When looking for a new physician, patients are often encouraged to select those who are board-certified or who have not made payments on malpractice claims. Yet these characteristics are not always a good predictor of which physicians will provide the highest-quality medical care, according to a new study from the RAND Corp., a nonprofit research organization, and the University of Pittsburgh School of Medicine.
“We found that the types of information widely available to patients for choosing a physician do not predict whether that physician will deliver evidence-based care,” says Rachel Reid, the study’s lead author and a medical student at the University of Pittsburgh School of Medicine. “These findings underscore the need for better physician performance data to help consumers choose their doctor.”
Studying a large group of physicians over a two-year period, researchers found that three characteristics were associated with better quality medical care: being female, being board-certified, and graduating from a domestic medical school.
But each of these characteristics increased quality only a small amount, and none offers consumers much guidance when it comes to choosing a high-quality medical provider, according to findings appearing in the Sept. 13 edition of the Archives of Internal Medicine.
Because detailed information about physician performance is seldom available to the general public, patients are encouraged to select physicians based on characteristics such as board certification, educational history, and whether they have made payments on malpractice claims.
To test this advice, researchers examined the care provided by about 10,000 Massachusetts physicians to more than 1.3 million adults during 2004 and 2005. Using information from insurance claims, researchers evaluated the quality of care the physicians provided for 22 common medical problems such as diabetes and heart disease by examining the fraction of the time physicians delivered guideline-based care to their patients.
Researchers found that the physicians studied provided on average about 63 percent of the recommended care. Average performance varied by condition, ranging from 31 percent for cataract care to 68 percent for care of congestive heart failure.
The difference in quality between the physicians with the best combination of characteristics (female, board-certified, and domestically trained) and the average physician with the worst combination (male, noncertified, and internationally trained) was only 6 percentage points, according to the study. But even among physicians with the best combination of characteristics, quality was uneven, ranging from 49 to 75 percent of recommended care.
“Few characteristics were consistently associated with high quality care, and those we did find were so small in magnitude that they are not significant in a practical sense,” says study co-author Ateev Mehrotra, an assistant professor at the University of Pittsburgh School of Medicine and a researcher at RAND. “There is little evidence to suggest that a patient would consistently receive higher quality care by switching to a physician with the combination of characteristics identified by our work to be associated with high-quality care.”
Board certification was the characteristic associated with the largest increase in performance (3.3 percentage points) and also was associated with higher performance scores with acute and preventive care. The finding provides preliminary evidence that there may be some quality benefit to be derived from maintenance of certification programs or the inclusion of board-certification activities as a requirement for maintaining a physician’s medical license.
Researchers say it is striking that the study found no consistent association between the number of malpractice payments or disciplinary actions against physicians and the quality of care they provide. Researchers also did not find any association between physicians’ years of experience and quality.
Researchers say that public reporting of individual-physician quality information may provide consumers with more valuable guidance when they need to choose a new physician.
Support for the study was provided by The Commonwealth Fund and U.S. Department of Labor. Other authors of the study are Dr. Mark W. Friedberg, John L. Adams and Elizabeth A. McGlynn of RAND.
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The RAND Corp. is a nonprofit institution that helps improve policy and decision making through research and analysis. RAND focuses on the issues that matter most such as health, education, national security, international affairs, law and business, the environment, and more. With a research staff consisting of some of the world’s preeminent minds, RAND has been expanding the boundaries of human knowledge for more than 60 years. As a nonpartisan organization, RAND is widely respected for operating independent of political and commercial pressures. RAND remains committed to public service by communicating its findings to a wide audience. This includes announcements to media, testimony by experts at RAND, and publications, many of which are available free at the organization’s web site.
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