Packham Tara L, MacDermid Joy C, Michlovitz Susan L, Buckley Norman
Can J Occup Ther. 2018 Apr;85(2):99-105. doi: 10.1177/0008417417734562. Epub 2018 Feb 23.
Complex regional pain syndrome (CRPS) is a perplexing neurological condition, and persons with CRPS experience substantial loss of daily roles and activities. A condition-specific measure is being developed to evaluate CRPS.
We describe the use of cognitive interviews to examine content validity of this patient-reported outcome measure for CRPS.
Interviews with 44 persons with CRPS were analyzed to identify problems with wording and support content validation. Item-total correlations were calculated for proposed subscales, and scores were plotted to consider floor/ceiling effects.
Interviews identified questions where respondents considered factors unrelated to the construct of interest or were underaddressed by the questionnaire, including depression and skin temperature. The symptoms, daily function, and coping/social impact scales demonstrated satisfactory correlations (Cronbach's alpha 0.76-0.86). Despite a sampling bias of severity, no frank floor/ceiling effects were noted.
This study builds a foundation for continuing development and evaluation of the measurement properties of the Patient-Reported Hamilton Inventory for CRPS. It makes explicit the iterative decisions involved in rigorous instrument development.
复杂性区域疼痛综合征（CRPS）是一种令人困惑的神经系统疾病，患有CRPS的人在日常角色和活动中会遭受重大损失。目前正在开发一种针对特定疾病的测量方法来评估CRPS。
我们描述了使用认知访谈来检验这种针对CRPS的患者报告结局测量方法的内容效度。
对44名CRPS患者进行访谈，分析以识别措辞问题并支持内容效度。计算了拟议子量表的项目-总分相关性，并绘制分数以考虑地板效应/天花板效应。
访谈发现一些问题，受访者在这些问题中考虑了与感兴趣的结构无关的因素或问卷未充分涉及的因素，包括抑郁和皮肤温度。症状、日常功能和应对/社会影响量表显示出令人满意的相关性（克朗巴赫α系数为0.76 - 0.86）。尽管存在严重程度的抽样偏差，但未发现明显的地板效应/天花板效应。
本研究为继续开发和评估CRPS患者报告汉密尔顿量表的测量特性奠定了基础。它明确了严格的量表开发中涉及的迭代决策。
