政大機構典藏-National Chengchi University Institutional Repository(NCCUR):Item 140.119/59144

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政大機構典藏 > 社會科學學院 > 財政學系 > 期刊論文 > Item 140.119/59144

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Title:	Surgeon and Hospital Volume as Quality Indicators for CABG in Taiwan: Examining Hazard to Mortality and Accounting for Unobserved Heterogeneity
Authors:	Hockenberry JM;Lien, HM;Chou, SY
Contributors:	政大財政系
Date:	2010-10
Issue Date:	2013-08-26 16:10:39 (UTC+8)
Abstract:	Objective. To investigate whether provider volume has an impact on the hazard of mortality for coronary artery bypass grafting (CABG) patients in Taiwan. Data Sources/ Study Setting. Multiple sources of linked data from the National Health Insurance Program in Taiwan. Study Design. The linked data were used to identify 27,463 patients who underwent CABG without concomitant angioplasty or valve procedures and the surgeon and hospital volumes. GEE and hazard models were estimated to assess the impact of volume on mortality. The hazard modeling technique used accounts for bias stemming from unobserved heterogeneity. Principal Findings. Both surgeon and hospital volume quartiles are inversely related to the hazard of mortality after CABG. Patients whose surgeon is in the three higher volume quartiles have lower 1, 3, 6 and 12 month mortality after CABG, while only those having their procedure performed at the highest quartile of volume hospitals have lower mortality outcomes. Conclusions. Mortality outcomes are related to provider CABG volume in Taiwan. Unobserved heterogeneity is a concern in the volume-outcome relationship, and after accounting for it surgeon volume effects on short term mortality are large. Employing models controlling for unobserved heterogeneity and examining longer term mortality may still differentiate provider quality by volume.
Relation:	Health Service Research, 45(5), 1168-1187
Data Type:	article
Appears in Collections:	[財政學系] 期刊論文

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