Stuiver Martijn M, ten Tusscher Marieke R, van Opzeeland Anita, Brendeke Wim, Lindeboom Robert, Dijkstra Pieter U, Aaronson Neil K
Department of Physiotherapy, The Netherlands Cancer Institute, Amsterdam, The Netherlands.
Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
Head Neck. 2016 Jan;38(1):102-10. doi: 10.1002/hed.23859. Epub 2015 Jun 15.
Patient-reported outcome measures evaluating shoulder disability after neck dissection have not been sufficiently validated. We assessed the psychometric properties of the Shoulder Disability Questionnaire (SDQ), Neck Dissection Impairment Index (NDII), and the Shoulder Pain and Disability Index (SPADI) in patients after neck dissection.
One hundred seven patients completed the SDQ, NDII, and SPADI on 4 occasions over 6 months, and underwent physical examination. We assessed internal consistency, test-retest reliability, clinical and construct validity, and responsiveness to change. The possibility of combining the NDII and SPADI items into a single scale was explored by Rasch analysis.
All questionnaires exhibited good reliability and validity. We were successful in fitting a Rasch model to the data.
The results support the suitability of the SDQ, NDII, and the SPADI for use in neck dissection patients. Combining the SPADI and NDII in a single Rasch scale improves item difficulty distribution but reduces variability and discriminative ability.
评估颈部清扫术后肩部功能障碍的患者报告结局测量方法尚未得到充分验证。我们评估了颈部清扫术后患者的肩部功能障碍问卷（SDQ）、颈部清扫损伤指数（NDII）和肩部疼痛与功能障碍指数（SPADI）的心理测量特性。
107例患者在6个月内分4次完成了SDQ、NDII和SPADI，并接受了体格检查。我们评估了内部一致性、重测信度、临床和结构效度以及对变化的反应性。通过Rasch分析探讨了将NDII和SPADI项目合并为单一量表的可能性。
所有问卷均显示出良好的信度和效度。我们成功地将Rasch模型拟合到数据中。
结果支持SDQ、NDII和SPADI适用于颈部清扫患者。将SPADI和NDII合并为单一的Rasch量表可改善项目难度分布，但会降低变异性和区分能力。
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