Measurement properties of core outcomes in patients with tennis elbow.
prospective_cohort · Level II
Where this comes from
- Record sourced from PubMed, PMID 40453542.
- Also identified by DOI 10.1177/17585732251344264 and PMC identifier 12122481.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
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<sub>95%</sub>) was 17 points, and for the pain and function subscales (0-50) 8 and 12. For pain on gripping (0-10), the SDC<sub>95%</sub> 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.
Anatomy
- elbow