A comparison of traditional and Rasch cut points for assessing clinically important change in health-related quality of life among patients with asthma
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- 作者：Stacie M. Metz ; Kathleen W. Wyrwich ; Ajit N. Babu ; Kurt Kroenke ; William M. Tierney and Fredric D. Wolinsky
- 关键词：HRQOL ; Item response theory ; Medical Decision Making ; Outcomes research ; Patient centered care ; Rasch modeling
- 刊名：Quality of Life Research
- 出版年：2006
- 出版时间：December, 2006
- 年：2006
- 卷：15
- 期：10
- 页码：1639-1649
- 全文大小：214 KB
文摘
Background Patient-perceived change in health-related quality of life (HRQoL) domains has often been classified using a 15-point patient transition rating scale. However, traditional change levels of trivial ( − 1, 0, or 1), minimal (2, 3 or − 2, − 3), moderate (4, 5 or − 4, − 5) and large (6, 7 or − 6, − 7) on this scale have been arbitrarily defined and originally assumed that change related to an improvement was the same as that for a decline.