| No continuous relationship between Veterans Affairs hospital coronary artery bypass grafting surgical volume and operative mortality. | |
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MedLine Citation:
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PMID: 8561546 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: The purpose of this study was to determine whether risk-adjusted coronary artery bypass grafting mortality rates are significantly related to coronary artery bypass grafting surgical procedure volume within the Department of Veterans Affairs hospital system. METHODS: From April 1987 to September 1992, expected mortality rates were calculated for 23,986 coronary artery bypass grafting procedures performed at 44 different Veterans Affairs hospitals. RESULTS: This study found a statistically significant relationship between annual hospital coronary artery bypass grafting volume and observed mortality rates (p < 0.02). However, no statistically significant relationship between coronary artery bypass grafting volume and risk-adjusted operative mortality was found (p = 0.10). Using analysis of variance on hospital-level data, hospitals with 100 or less cases per year have higher observed to expected mortality ratios than hospitals performing more than 100 cases per year (p = 0.03). Using Poisson regression models, however, a volume threshold could not be found. CONCLUSIONS: These findings are consistent with the current Veterans Affairs policy requirements to periodically review quality at low-volume hospitals. |
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Authors:
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A L Shroyer; G Marshall; B A Warner; R R Johnson; W Guo; F L Grover; K E Hammermeister |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: The Annals of thoracic surgery Volume: 61 ISSN: 0003-4975 ISO Abbreviation: Ann. Thorac. Surg. Publication Date: 1996 Jan |
Date Detail:
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Created Date: 1996-02-23 Completed Date: 1996-02-23 Revised Date: 2010-03-24 |
Medline Journal Info:
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Nlm Unique ID: 15030100R Medline TA: Ann Thorac Surg Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 17-20 Citation Subset: AIM; IM |
Affiliation:
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Denver Veterans Affairs Medical Center, Division of Cardiothoracic Surgery, CO 80220, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Analysis of Variance Coronary Artery Bypass / mortality*, statistics & numerical data Hospital Mortality Hospitals, Veterans / statistics & numerical data* Humans Poisson Distribution Risk Factors |
| Comments/Corrections | |
Comment In:
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Ann Thorac Surg. 1996 Sep;62(3):941-3
[PMID:
8784048
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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