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Health Care Issues in the United States and Japan$
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David A. Wise and Naohiro Yashiro

Print publication date: 2006

Print ISBN-13: 9780226902920

Published to Chicago Scholarship Online: February 2013

DOI: 10.7208/chicago/9780226903248.001.0001

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The Volume-Outcome Relationship in Japan

The Volume-Outcome Relationship in Japan

The Case of Percutaneous Transluminal Coronary Angioplasty (PTCA) Volume on Mortality of Acute Myocardial Infarction (AMI) Patients

Chapter:
(p.113) 5 The Volume-Outcome Relationship in Japan
Source:
Health Care Issues in the United States and Japan
Author(s):

Koichi Kawabuchi

Shigeru Sugihara

Publisher:
University of Chicago Press
DOI:10.7208/chicago/9780226903248.003.0006

This chapter explores the link between the number of percutaneous transluminal coronary angioplasty (PTCA) procedures performed and negative medical outcomes among acute myocardial infarction (AMI) patients in Japan. A physician in a high-volume hospital does not necessarily perform a large number of PTCA procedures. One possibility is that hospital volume has a significant effect on physicians' outcomes. The other possibility is that unobserved common factors affect hospital- and physician-level mortality rates while physician-level mortality is independent of hospital volume. Moreover, it is found that hospital volume does not seem to be an additional contributing factor to the higher quality of health care. The volume effect operates not at the hospital level but at the physician level. Risk adjustment is important for the assessment of the quality of health care. No spillover effects nor organizational skill are observed as represented by hospital volumes.

Keywords:   percutaneous transluminal coronary angioplasty, acute myocardial infarction, hospital volume, health care, physician, risk adjustment

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