Department of Health Policy, Stanford University, Stanford, California, USA.
National Bureau of Economic Research, Cambridge, Massachusetts, USA.
Health Econ. 2022 Dec;31(12):2537-2557. doi: 10.1002/hec.4594. Epub 2022 Aug 31.
We study the relationship between diagnosis-related group (DRG) financing and the availability of computed tomography (CT) scanners in Switzerland. A number of Swiss hospitals switched to DRG payment for a portion of their payments progressively between 2002 and 2011. As of 2012, all hospitals were required to use DRG payment for a substantial portion of reimbursement. We conducted two main analyses. First, we studied hospitals switching in 2002-2011 and estimated event study models to compare changes in CT availability before and after the adoption of DRG financing, using the hospitals that did not switch during this time as a comparison group. In the second, we compared trends in CT availability before and after 2012, for the hospitals that switched in that year. In both analyses, we find a statistically significant association between the switch to DRG financing and lower levels of CT availability.
我们研究了诊断相关分组（DRG）融资与瑞士 CT 扫描仪可用性之间的关系。自 2002 年至 2011 年，瑞士的多家医院逐渐开始将一部分支付款项转为 DRG 支付方式。截至 2012 年，所有医院都需要使用 DRG 支付方式来支付大部分报销款项。我们进行了两项主要分析。首先，我们研究了 2002-2011 年期间进行切换的医院，并使用在此期间未进行切换的医院作为对照组，通过事件研究模型来比较采用 DRG 融资前后 CT 可用性的变化。在第二项分析中，我们比较了当年切换的医院在 2012 年前后 CT 可用性的趋势。在这两项分析中，我们都发现向 DRG 融资方式的切换与 CT 可用性水平的降低之间存在统计学上的显著关联。
