Sveinall Håkon, Brox Jens Ivar, Engebretsen Kaia B, Hoksrud Aasne Fenne, Røe Cecilie, Johnsen Marianne Bakke
Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway.
Faculty of Medicine, Institute for Clinical Medicine, University of Oslo, Oslo, Norway.
Shoulder Elbow. 2025 May 29:17585732251344264. doi: 10.1177/17585732251344264.
The Patient-Rated Tennis Elbow Evaluation (PRTEE), pain on gripping, pain-free, and maximum grip strength are widely used outcomes for tennis elbow. This study tested the measurement properties with a prospective test-retest study design.
100 participants with tennis elbow were included. The reliability, internal consistency, validity, responsiveness, and the Minimal Important Change (MIC) were evaluated.
The reliability of all measures was acceptable. 8/15 PRTEE items were below the criteria for content validity. For PRTEE total score (0-100), the smallest detectable change 95% (SDC) was 17 points, and for the pain and function subscales (0-50) 8 and 12. For pain on gripping (0-10), the SDC was 4, and 6.4 kg for pain-free grip strength and 8.4 kg for maximum grip strength. The MIC for PRTEE total score was 9 points, 11 for pain and 4 for function. The MIC was 3.5 for pain on gripping, and 6.5 kg and 1 kg for pain-free and maximum grip strength. Construct validity was confirmed for PRTEE, pain-free grip strength, and pain on gripping. PRTEE pain and pain-free grip strength were responsive.
All measurements were reliable. PRTEE had questionable content validity. The interpretation of MIC is challenging due to large measurement errors.
患者自评网球肘评估量表(PRTEE)、握力时疼痛程度、无痛状态及最大握力是广泛用于评估网球肘的指标。本研究采用前瞻性重测研究设计对这些指标的测量特性进行了测试。
纳入100例网球肘患者。对其可靠性、内部一致性、效度、反应度及最小重要变化值(MIC)进行评估。
所有测量指标的可靠性均可接受。PRTEE的15项条目中有8项未达内容效度标准。对于PRTEE总分(0 - 100分),95%最小可检测变化值(SDC)为17分;对于疼痛和功能子量表(0 - 50分),SDC分别为8分和12分。对于握力时疼痛程度(0 - 10分),SDC为4分;无痛握力的SDC为6.4千克,最大握力的SDC为8.4千克。PRTEE总分的MIC为9分,疼痛子量表的MIC为11分,功能子量表的MIC为4分。握力时疼痛程度的MIC为3.5分,无痛握力和最大握力的MIC分别为6.5千克和1千克。PRTEE、无痛握力及握力时疼痛程度的结构效度得到证实。PRTEE疼痛程度及无痛握力具有反应度。
所有测量指标均可靠。PRTEE的内容效度存疑。由于测量误差较大,MIC的解读具有挑战性。