The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates

Studies have linked Accountable Care Organizations (ACOs) to improved primary care, but there is little research on how ACOs affect care in other settings. We examined whether Medicare ACOs have improved hospital quality of care, specifically focusing on preventable inpatient mortality. We used 2008...

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Main Authors: Eli Cutler PhD, Zeynal Karaca PhD, Rachel Henke PhD, Michael Head MS, Herbert S. Wong PhD
Format: Article
Language:English
Published: SAGE Publishing 2018-09-01
Series:Inquiry: The Journal of Health Care Organization, Provision, and Financing
Online Access:https://doi.org/10.1177/0046958018800092
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author Eli Cutler PhD
Zeynal Karaca PhD
Rachel Henke PhD
Michael Head MS
Herbert S. Wong PhD
author_facet Eli Cutler PhD
Zeynal Karaca PhD
Rachel Henke PhD
Michael Head MS
Herbert S. Wong PhD
author_sort Eli Cutler PhD
collection DOAJ
description Studies have linked Accountable Care Organizations (ACOs) to improved primary care, but there is little research on how ACOs affect care in other settings. We examined whether Medicare ACOs have improved hospital quality of care, specifically focusing on preventable inpatient mortality. We used 2008-2014 Healthcare Cost and Utilization Project hospital discharge data from 34 states’ Medicare ACO and non-ACO hospitals in conjunction with data from the American Hospital Association Annual Survey and the Survey of Care Systems and Payment. We estimated discharge-level logistic regression models that measured the relationship between ACO affiliation and mortality following admissions for acute myocardial infarction, abdominal aortic aneurysm (AAA) repair, coronary artery bypass grafting, and pneumonia, controlling for patient demographic mix, hospital, and year. Our results suggest that, on average, Medicare ACO hospitals are not associated with improved mortality rates for the studied IQI conditions. Stakeholders may potentially consider providing ACOs with incentives or designing new programs for ACOs to target inpatient mortality reductions.
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spelling doaj.art-3c51ad4380b44195880c9e718f67989b2022-12-21T18:27:13ZengSAGE PublishingInquiry: The Journal of Health Care Organization, Provision, and Financing0046-95801945-72432018-09-015510.1177/0046958018800092The Effects of Medicare Accountable Organizations on Inpatient Mortality RatesEli Cutler PhD0Zeynal Karaca PhD1Rachel Henke PhD2Michael Head MS3Herbert S. Wong PhD4IBM Watson Health, Cambridge, MA, USAU.S. Department of Health and Human Services, Agency for Healthcare Research and Quality, Rockville, MD, USAIBM Watson Health, Cambridge, MA, USAIBM Watson Health, Cambridge, MA, USAU.S. Department of Health and Human Services, Agency for Healthcare Research and Quality, Rockville, MD, USAStudies have linked Accountable Care Organizations (ACOs) to improved primary care, but there is little research on how ACOs affect care in other settings. We examined whether Medicare ACOs have improved hospital quality of care, specifically focusing on preventable inpatient mortality. We used 2008-2014 Healthcare Cost and Utilization Project hospital discharge data from 34 states’ Medicare ACO and non-ACO hospitals in conjunction with data from the American Hospital Association Annual Survey and the Survey of Care Systems and Payment. We estimated discharge-level logistic regression models that measured the relationship between ACO affiliation and mortality following admissions for acute myocardial infarction, abdominal aortic aneurysm (AAA) repair, coronary artery bypass grafting, and pneumonia, controlling for patient demographic mix, hospital, and year. Our results suggest that, on average, Medicare ACO hospitals are not associated with improved mortality rates for the studied IQI conditions. Stakeholders may potentially consider providing ACOs with incentives or designing new programs for ACOs to target inpatient mortality reductions.https://doi.org/10.1177/0046958018800092
spellingShingle Eli Cutler PhD
Zeynal Karaca PhD
Rachel Henke PhD
Michael Head MS
Herbert S. Wong PhD
The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates
Inquiry: The Journal of Health Care Organization, Provision, and Financing
title The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates
title_full The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates
title_fullStr The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates
title_full_unstemmed The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates
title_short The Effects of Medicare Accountable Organizations on Inpatient Mortality Rates
title_sort effects of medicare accountable organizations on inpatient mortality rates
url https://doi.org/10.1177/0046958018800092
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