Validation of Persian Version of Patient-Rated Wrist and Hand Evaluation: Confirmatory Factor Analysis and Rasch Analysis.
Maryam Farzad, Joy C MacDermid, Ze Lu and 1 others
PMID 33543101WHAT IT FOUND
The Persian Patient-Rated Wrist and Hand Evaluation works well for measuring pain, specific tasks, and usual activities separately.
Clinicians should report these three subscales rather than a single total score to capture distinct aspects of disability.
Key findings
01The questionnaire fits a 3-factor structure best, supporting the separate measurement of pain, specific activities, and usual activities.
02Each subscale showed good reliability and internal consistency, with no bias found based on age, sex, or hand dominance.
03The tool did not fully capture the range of patient ability, indicating a need for both more difficult and easier items to cover all levels of function.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study used a convenience sample, so the results may not represent all patients with hand conditions. The questionnaire was not given to every patient who visited the clinic during the study period. The items did not cover the full range of patient ability, suggesting the tool might miss subtle differences at the extreme ends of function. Different types of hand conditions were not compared for bias because the diagnoses in the sample were too similar.
The easy way to misread this
Do not use a single total score from this questionnaire as the primary outcome measure. The study showed that pain, specific activities, and usual activities are distinct parts of disability, and combining them into one number reduces the accuracy of what you are measuring.