The relationship between operator volume and outcomes after percutaneous coronary interventions in high volume hospitals in 199419961
The northern New England experience
David J. Malenka, MD, FACC* ,
Paul D. McGrath, MD, MSc, FACC ,
David E. Wennberg, MD, MPH ,
Thomas J. Ryan, Jr., MD, FACC ,
Mirle A. Kellett, Jr, MD, FACC ,
Samuel J. Shubrooks, Jr., MD, FACC||,
William A. Bradley, MD, FACC ,
Bruce D. Hettlemen, MD, FACC*,
John F. Robb, MD, FACC*,
Michael J. Hearne, MD, FACC ,
Theodore M. Silver, MD, FACC¶,
Matthew W. Watkins, MD, FACC#,
John R. OMeara, MD, FACC ,
Peter N. VerLee, MD, FACC¶,
Daniel J. ORourke, MD, MSc, FACC* for the Northern New England Cardiovascular Disease Study Group
* Section of Cardiology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA
Center for Evaluative and Clinical Sciences, Dartmouth Medical School, Hanover, New Hampshire, USA
Division of Health Services Research and the Division of Cardiology, Department of Medicine, Maine Medical Center, Portland, Maine, USA
Catholic Medical Center, Manchester, New Hampshire, USA
|| Division of Cardiology, Beth Israel Deaconess Medical CenterWest Campus, Boston, Massachusetts, USA
¶ Division of Cardiology, Eastern Maine Medical Center, Bangor, Maine, USA
# Division of Cardiology, Fletcher Allen Health Care, Burlington, Vermont, USA

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Figure 1 The changing use of coronary stents in northern New England from 19941996 by tercile of annual operator volume.
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