Andrew M Ryan1. 1. Brandeis University, Waltham, MA 02454, USA. andrew@brandeis.edu
Abstract
OBJECTIVE: To evaluate the effects of the Premier Inc. and Centers for Medicare and Medicaid Services Hospital Quality Incentive Demonstration (PHQID), a public quality reporting and pay-for-performance (P4P) program, on Medicare patient mortality, cost, and outlier classification. DATA SOURCES: The 2000-2006 Medicare inpatient claims, Medicare denominator files, and Medicare Provider of Service files. STUDY DESIGN: Panel data econometric methods are applied to a retrospective cohort of 11,232,452 admissions from 6,713,928 patients with principal diagnoses of acute myocardial infarction (AMI), heart failure, pneumonia, or a coronary-artery bypass grafting (CABG) procedure from 3,570 acute care hospitals between 2000 and 2006. Three estimators are used to evaluate the effects of the PHQID on risk-adjusted (RA) mortality, cost, and outlier classification in the presence of unobserved selection, resulting from the PHQID being voluntary: fixed effects (FE), FE estimated in the subset of hospitals eligible for the PHQID, and difference-in-difference-in-differences. DATA EXTRACTION METHODS: Data were obtained from CMS. Principal Findings. This analysis found no evidence that the PHQID had a significant effect on RA 30-day mortality or RA 60-day cost for AMI, heart failure, pneumonia, or CABG and weak evidence that the PHQID increased RA outlier classification for heart failure and pneumonia. CONCLUSIONS: By not reducing mortality or cost growth, this study suggests that the PHQID has made little impact on the value of inpatient care purchased by Medicare.
OBJECTIVE: To evaluate the effects of the Premier Inc. and Centers for Medicare and Medicaid Services Hospital Quality Incentive Demonstration (PHQID), a public quality reporting and pay-for-performance (P4P) program, on Medicare patient mortality, cost, and outlier classification. DATA SOURCES: The 2000-2006 Medicare inpatient claims, Medicare denominator files, and Medicare Provider of Service files. STUDY DESIGN: Panel data econometric methods are applied to a retrospective cohort of 11,232,452 admissions from 6,713,928 patients with principal diagnoses of acute myocardial infarction (AMI), heart failure, pneumonia, or a coronary-artery bypass grafting (CABG) procedure from 3,570 acute care hospitals between 2000 and 2006. Three estimators are used to evaluate the effects of the PHQID on risk-adjusted (RA) mortality, cost, and outlier classification in the presence of unobserved selection, resulting from the PHQID being voluntary: fixed effects (FE), FE estimated in the subset of hospitals eligible for the PHQID, and difference-in-difference-in-differences. DATA EXTRACTION METHODS: Data were obtained from CMS. Principal Findings. This analysis found no evidence that the PHQID had a significant effect on RA 30-day mortality or RA 60-day cost for AMI, heart failure, pneumonia, or CABG and weak evidence that the PHQID increased RA outlier classification for heart failure and pneumonia. CONCLUSIONS: By not reducing mortality or cost growth, this study suggests that the PHQID has made little impact on the value of inpatient care purchased by Medicare.
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