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The impacts of DRG-based payments on health care provider behaviors under a universal coverage system: a
Shou-Hsia Cheng1, Chi-Chen Chen, Shu-Ling Tsai
1Institute of Health Policy and Management, College of Public Health, National Taiwan University, Taiwan. shcheng@ntu.edu.tw
Objective:
To examine the impacts of diagnosis-related group (DRG) payments on health care provider's behavior under a universal coverage system in Taiwan.
Methods:
This study employed a population-based natural experiment study design. Patients who underwent coronary artery bypass graft surgery or percutaneous transluminal coronary angioplasty, which were incorporated in the Taiwan version of DRG payments in 2010, were defined as the intervention group. The comparison group consisted of patients who underwent cardiovascular procedures which were paid for by fee-for-services schemes and were selected by propensity score matching from patients treated by the same group of surgeons. The generalized estimating equations model and difference-in-difference analysis was used in this study.
Results:
The introduction of DRG payment resulted in a 10% decrease (p<0.001) in patient's length of stay in the intervention group in relation to the comparison group. The intensity of care slightly declined with p<0.001. No significant changes were found concerning health care outcomes measured by emergency department visits, readmissions, and mortality after discharge.
Conclusion:
The DRG-based payment resulted in reduced intensity of care and shortened length of stay. The findings might be valuable to other countries that are developing or reforming their payment system under a universal coverage system.
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