Psychometric Properties of the Patient-Reported Outcome Measures for People With Ulnar Nerve Entrapment at the Elbow: A Systematic Review.

The objective of this study was to systematically review, critically appraise, and synthesize evidence on the measurement properties of patient-reported outcome measures (PROMs) for people with ulnar nerve entrapment at the elbow (UNE). CINAHL, MEDLINE, Embase, and Scopus were searched for studies reporting on the psychometric properties of the PROMs used to assess pain, disability, and quality of life of people with UNE. Relevant data were extracted based on the Consensus-Based Standards for the Selection of Health Measurement Instruments 2018 checklist. Two authors independently rated the quality and risk of bias of the studies. A qualitative synthesis was performed according to the Consensus-Based Standards for the Selection of Health Measurement Instruments guidelines. The results were categorized based on the identified PROMs, and all the psychometric properties were summarized and presented. Eight included studies had a quality score of very good or higher. Among all the included PROMs, the Patient-Rated Ulnar Nerve Evaluation (PRUNE) was comprehensively evaluated in 4 studies and had high reliability, appropriate correlation to the physical component summary score of the 36-Item Short-Form Health Survey (r = -0.68), excellent content (cognitive interviews), structural (factor analysis) and discriminative validities, and high responsiveness. The Disabilities of the Arm, Shoulder and Hand Questionnaire was assessed in 5 studies and had appropriate properties, showing a high correlation with the 8-Item Short-Form Health Survey (r = 0.77) and PRUNE (r = 0.75) and moderate responsiveness. The PRUNE was the most specific to UNE, had the most supporting studies and evidence of excellent reliability, validity, and responsiveness and therefore was the preferred PROM. The Disabilities of the Arm, Shoulder and Hand Questionnaire demonstrated more limited validation across 5 studies and had moderate responsiveness. Information on other included PROMs was limited in terms of psychometric properties. This study provides insight into which PROM is potentially more suitable for measuring outcomes related to UNE.

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