Hangsheng Liu

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We evaluated medical utilization and economic burden of self-reported Parkinson's disease (PD) on patients and society. Using the 1992-2000 Medicare Current Beneficiary Survey, we compared health care utilization and expenditures (in 2002 U.S. dollars) of Medicare subscribers with and without PD, adjusting for sociodemographic characteristics and(More)
BACKGROUND Retail clinics are an increasingly popular source for medical care. Concerns have been raised about the effect of these clinics on the cost, quality, and delivery of preventive care. OBJECTIVE To compare the care received at retail clinics for 3 acute conditions with that received at other care settings. DESIGN Claims data from 2005 and 2006(More)
OBJECTIVE The study evaluated the accuracy of Medicare claims in identifying elderly patients with depression compared with diagnoses of depression made with validated self-report depression scales. METHODS The study included 1,551 participants in the Medicare Primary and Consumer-Directed Care Demonstration. They resided in 19 counties in three states.(More)
Proposals to use episodes of care as a basis for payment and performance measurement are largely conceptual at this stage, with little empirical work or experience in applied settings to guide their design. Based on analyses of Medicare data, we identified key issues that will need to be considered related to defining episodes and determining which provider(More)
This article investigates the characteristics of workplace wellness programs, their prevalence, their impact on employee health and medical cost, facilitators of their success, and the role of incentives in such programs. The authors employ four data collection and analysis streams: a review of the scientific and trade literature, a national survey of(More)
STUDY PURPOSE Administrative databases are commonly used to examine use of healthcare service, with researchers relying on diagnostic codes to identify medical conditions. This study evaluates the accuracy of administrative claims in identifying Parkinsonism cases compared to the self-reported Parkinson's disease (PD). METHODS The reference cases were(More)
BACKGROUND Hospital associated infections are major problems, which are increasing in incidence and very costly. However, most research has focused only on measuring consequences associated with the initial hospitalization. We explored the long-term consequences of infections in elderly Medicare patients admitted to an intensive care unit (ICU) and(More)
Medicare's approximately 250 accountable care organizations (ACOs) care for a growing portion of all fee-for-service beneficiaries across the United States. We examined where ACOs have formed and what regional factors are predictive of ACO formation. Understanding these factors could help policy makers foster growth in areas with limited ACO development. We(More)
OBJECTIVES To compare outcomes and measures of efficiency for hospitalized elderly adults managed by geriatricians with those managed by other physicians. DESIGN Secondary data analysis using a system that integrates clinical and financial information for inpatient and outpatient services delivered throughout the University of Pittsburgh Medical Center(More)
OBJECTIVE To evaluate the ability of the structure and code sets specified in the National Council for Prescription Drug Programs Structured and Codified Sig Format to represent ambulatory electronic prescriptions. DESIGN We parsed the Sig strings from a sample of 20,161 de-identified ambulatory e-prescriptions into variables representing the fields of(More)