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Observational Study
. 2018 Feb 1;3(2):133-141.
doi: 10.1001/jamacardio.2017.4843.

Comparison of Accessibility, Cost, and Quality of Elective Coronary Revascularization Between Veterans Affairs and Community Care Hospitals

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Free PMC article
Observational Study

Comparison of Accessibility, Cost, and Quality of Elective Coronary Revascularization Between Veterans Affairs and Community Care Hospitals

Paul G Barnett et al. JAMA Cardiol. .
Free PMC article

Abstract

Importance: The Veterans Affairs (VA) Community Care (CC) Program supplements VA care with community-based medical services. However, access gains and value provided by CC have not been well described.

Objectives: To compare the access, cost, and quality of elective coronary revascularization procedures between VA and CC hospitals and to evaluate if procedural volume or publicly reported quality data can be used to identify high-value care.

Design, setting, and participants: Observational cohort study of veterans younger than 65 years undergoing an elective coronary revascularization, controlling for differences in risk factors using propensity adjustment. The setting was VA and CC hospitals. Participants were veterans undergoing elective percutaneous coronary intervention (PCI) and veterans undergoing coronary artery bypass graft (CABG) procedures between October 1, 2008, and September 30, 2011. The analysis was conducted between July 2014 and July 2017.

Exposures: Receipt of an elective coronary revascularization at a VA vs CC facility.

Main outcomes and measures: Access to care as measured by travel distance, 30-day mortality, and costs.

Results: In the 3 years ending on September 30, 2011, a total of 13 237 elective PCIs (79.1% at the VA) and 5818 elective CABG procedures (83.6% at the VA) were performed in VA or CC hospitals among veterans meeting study inclusion criteria. On average, use of CC was associated with reduced net travel by 53.6 miles for PCI and by 73.3 miles for CABG surgery compared with VA-only care. Adjusted 30-day mortality after PCI was higher in CC compared with VA (1.54% for CC vs 0.65% for VA, P < .001) but was similar after CABG surgery (1.33% for CC vs 1.51% for VA, P = .74). There were no differences in adjusted 30-day readmission rates for PCI (7.04% for CC vs 7.73% for VA, P = .66) or CABG surgery (8.13% for CC vs 7.00% for VA, P = .28). The mean adjusted PCI cost was higher in CC ($22 025 for CC vs $15 683 for VA, P < .001). The mean adjusted CABG cost was lower in CC ($55 526 for CC vs $63 144 for VA, P < .01). Neither procedural volume nor publicly reported mortality data identified hospitals that provided higher-value care with the exception that CABG mortality was lower in small-volume CC hospitals.

Conclusions and relevance: In this veteran cohort, PCIs performed in CC hospitals were associated with shorter travel distance but with higher mortality, higher costs, and minimal travel savings compared with VA hospitals. The CABG procedures performed in CC hospitals were associated with shorter travel distance, similar mortality, and lower costs. As the VA considers expansion of the CC program, ongoing assessments of value and access gains are essential to optimize veteran outcomes and VA spending.

Conflict of interest statement

Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest, and none were reported.

Figures

Figure 1.
Figure 1.. Adjusted 30-Day Mortality and Readmission Rates in Veterans Affairs (VA) and Community Care Program (CC) Hospitals
The adjusted risk of 30-day mortality for elective percutaneous coronary intervention (PCI) was significantly elevated for CC hospitals compared with VA hospitals. There were no differences in adjusted 30-day mortality risk after elective coronary artery bypass graft (CABG) surgery or in risk of 30-day readmission. Covariates used for propensity adjustment included age, sex, race/ethnicity, recent myocardial infarction, prior PCI, prior CABG surgery, cerebrovascular disease, peripheral vascular disease, congestive heart failure, type 1 and type 2 diabetes, body mass index, renal function, dialysis, chronic obstructive pulmonary disease, atrial fibrillation, and the number of vessels revascularized. RR indicates relative risk.
Figure 2.
Figure 2.. Adjusted 30-Day Mortality and Readmission Rates by Proxy Measures of Hospital Quality
Adjusted risk of 30-day mortality or 30-day admission was not elevated at hospitals with a proxy indicator of quality limitation, including annual procedure volume below the recommended standard or acute myocardial infarction (AMI) mortality risk in the upper 10% reported to Hospital Compare. CABG indicates coronary artery bypass graft; PCI, percutaneous coronary intervention; and RR, relative risk.

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References

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