Validation of a photophobia symptom impact scale
Validation of a photophobia symptom impact scale
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DOI：
10.1177/0333102419845641
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发表时间：
2019-10-01
期刊：
影响因子：
4.9
通讯作者：
Katz, Bradley J.
中科院分区：
文献类型：
--
作者：
Cortez, Melissa M.;Digre, Kathleen;Katz, Bradley J.
背景 在临床环境中对畏光症的常规评估可能会低估这种情况的存在和严重程度。我们的目的是开发和验证一份调查问卷，以改进对畏光对日常生活活动影响的评估，并确定该调查问卷与光敏感性阈值心理物理学评估的关系。方法 我们开发了包含 17 项的犹他州畏光症状影响量表 (UPSIS-17)，并将其心理测量特性与包含 8 项的韩国畏光问卷 (KUMC-8) 进行比较。 95 名有或没有光敏感性的受试者完成了两份问卷； 72 人还完成了基于实验室的光敏感性阈值评估。我们使用 Rasch 分析来评估仪器瞄准，包括内部一致性和可靠性。使用相关分析来评估问卷分数与光敏阈值之间的关系。结果我们观察到 UPSIS-17 和 KUMC-8 之间的相关性，r = 0.72 (p < 0.0001)。较高的 UPSIS-17 分数与光敏感性阈值相关，r = -0.42 (p < 0.0001)，而 KUMC-8 分数与光敏感性阈值没有显着相关性，r = -0.21 (p = 0.072)。在 Rasch 分析中，UPSIS-17 显示出比 KUMC-8 更好的仪器定位。人员-项目地图可以识别可以删除的问题，而不会影响调查问卷的有效性测量。结论 这项研究产生了一份简短的、包含 12 项的调查问卷。 UPSIS-12 保留了与 KUMC-8 和光敏感度阈值的显着相关性，从而提供了一种更简单的症状评估工具，同时保留了有效性。这种扩展的工具可能在临床和研究环境中有用，用于收集有关因畏光导致的残疾的数据。
Background Routine assessment of photophobia in the clinical setting may underestimate the presence and severity of this condition. We aimed to develop and validate a questionnaire to improve evaluation of the impact of photophobia on activities of daily living, and to determine the relationship of this questionnaire to psychophysical assessment of light sensitivity thresholds. Methods We developed the 17-item Utah Photophobia Symptom Impact Scale (UPSIS-17) and compared its psychometric properties to the 8-item Korean Photophobia Questionnaire (KUMC-8). Ninety five subjects with or without light sensitivity completed both questionnaires; 72 also completed laboratory-based assessment of light sensitivity thresholds. We used Rasch analysis to evaluate instrument targeting, including internal consistency and reliability. Correlation analysis was used to assess the relationship between questionnaire scores and light sensitivity thresholds. Results We observed correlation between UPSIS-17 and KUMC-8, r = 0.72 (p < 0.0001). Higher UPSIS-17 scores correlated with light sensitivity thresholds, r = -0.42 (p < 0.0001), whereas KUMC-8 scores did not significantly correlate with light sensitivity thresholds, r = -0.21 (p = 0.072). UPSIS-17 showed better instrument targeting than KUMC-8 on Rasch analysis. Person-item maps allowed for identification of questions that could be removed without affecting questionnaire validity measures. Conclusion This study resulted in a shortened, 12-item questionnaire. The UPSIS-12 retained significant correlation with both the KUMC-8 and light sensitivity thresholds, yielding a simpler tool for symptom assessment, while retaining validity. This expanded tool may be useful in clinical, as well as research settings, for collection of data about disability due to photophobia.