The shortened version of the Western Ontario Rotator Cuff Index (Short-WORC) is a patient reported outcome measure that evaluates quality of life (QoL) of patients with rotator cuff pathology. However, formal content validation of the full or Short-WORC has not been reported. This study aims to understand how 1) people interpret and calibrate responses to items on the Short-WORC and 2) compensatory strategies that might enhance function and thereby affect responses. This study uses cognitive interviewing, a qualitative methodology that focuses on the interpretation of questionnaire items. Patients with rotator cuff disorders (n = 10), clinicians (n = 6) and measurement researchers (n = 10) were interviewed using a talk aloud structured interview that evaluated each of the 7 items of the Short-WORC. All interviews were recorded and transcribed verbatim by one researcher (R.F). Analysis was done through an open coding scheme using a previously established framework. Overall, the items on the Short-WORC were well received by participants. Through the interviews, the 6 themes of: Comprehension, Inadequate response definition, Reference Point, Relevance, Perspective Modifiers and Calibration Across Items emerged. The items of working above the shoulder (90%), compensating with the unaffected arm (88%) and lifting heavy objects (92%) were the most relevant to participants. Participants calibrated their scores on the items of sleeping and styling (19%) the most. Perspective modifiers of gender, influenced the calibrations of items of styling your hair (30%) and dressing or undressing (19%). Compensatory strategies of task-re allocation and using assistive devices/resources were frequently mentioned by participants. Overall, participants had minor comprehension issues, but found the 7- items of the Short-WORC to be relevant to QoL. Therefore, the findings demonstrate that the Short-WORC is not cognitively complex, but varies with patient perspectives. Overall, the Short-WORC provides evidence of demonstrating strong content validity when used for rotator cuff disorder patients.

中文翻译：

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数字评分版本短WORC的项目的解释和内容有效性，以评估肩袖病理学处理的结果：一种认知访谈方法。

Western Ontario肩袖指数（Short-WORC）的简化版是一项患者报告的结局指标，用于评估肩袖病理学患者的生活质量（QoL）。但是，尚未报告正式或短期WORC的正式内容验证。本研究旨在了解1）人们如何解释和校准对Short-WORC上项目的响应，以及2）可能增强功能从而影响响应的补偿策略。本研究使用认知访谈，这是一种定性方法，侧重于调查表项目的解释。使用大声谈话结构化访谈对肩袖疾病（n = 10），临床医生（n = 6）和测量研究人员（n = 10）进行了访谈，评估了Short-WORC的7个项目。所有采访均由一名研究人员（RF）记录并逐字记录。通过使用以前建立的框架的开放编码方案来进行分析。总体而言，短期WORC上的项目受到了与会者的好评。通过访谈，出现了6个主题：理解，响应定义不足，参考点，相关性，视角修改器和跨项目校准。与参加者最相关的项目是肩部以上的工作（90％），补偿未受影响的手臂的工作（88％）和举起重物的项目（92％）。参与者对睡眠和造型项目的得分进行了最多的校准（19％）。性别的视角修改器影响了头发造型（30％）和着装或脱衣服（19％）项目的校准。参与者经常提到任务重分配和使用辅助设备/资源的补偿策略。总体而言，参与者的理解力较小，但他们发现“短期WORC”的7项内容与QoL有关。因此，研究结果表明，Short-WORC在认知上不是复杂的，而是随患者的观点而变化。总体而言，Short-WORC提供了证明其用于肩袖疾病患者具有很强的内容效度的证据。