Schwappach David L B, Strasmann Thomas J
Department of Health Policy and Management, Faculty of Medicine, University Witten/Herdecke, Alfred-Herrhausen Str. 50, 58448 Witten, Germany.
J Health Econ. 2006 May;25(3):432-48. doi: 10.1016/j.jhealeco.2005.08.002. Epub 2005 Sep 1.
We investigated the reliability of an internet-based stated-preference survey to elicit preferences for priority setting using a conjoint study like approach. Preferences were elicited among members of an Internet survey panel in an experimental "allocation of points" task at two times. The main finding is that the survey showed good reliability and most participants consistently adjusted their allocations of points to differences in presented scenarios. At the repetition of the survey, respondents were more likely to prioritize between new treatment programs competing for funding and those that did prioritize discriminated stronger between programs. We found no evidence that respondents were making easy choices or arbitrarily "clicked" through the survey.
我们采用类似联合分析的方法,调查了基于互联网的陈述性偏好调查在引出优先排序偏好方面的可靠性。在一项实验性的“积分分配”任务中,两次向互联网调查小组的成员征集偏好。主要发现是,该调查显示出良好的可靠性,大多数参与者会根据所呈现情景的差异持续调整他们的积分分配。在重复调查时,受访者更有可能在争夺资金的新治疗方案之间进行优先排序,而那些进行了优先排序的受访者在不同方案之间的区分度更强。我们没有发现证据表明受访者在轻松作答或随意“点击”完成调查。