Development and content validity of a rating scale for the pain and disability drivers management model.
Florian Naye, Simon Décary, Yannick Tousignant-Laflamme
PMID 35570310WHAT IT FOUND
Physiotherapists judged a new low back pain profile scale clear, well presented, and clinically usable after workshop feedback.
It has not been tested in real patients or linked to patient outcomes.
Key findings
01A 5-item rating scale was developed to screen the contribution of five PDDM domains in low back pain.
02Feedback from 42 physiotherapists across 3 workshops led to refinements, and the third workshop with 16 participants produced no further comments.
03All five items and the overall scale were rated above the acceptance thresholds for clarity, presentation, and clinical applicability, but some uncertainty ranges dipped below the thresholds.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
The content validity analysis used only 16 raters. Participants had just attended a workshop on the model, so their ratings may have been influenced by social desirability. Data were collected near the end of the workshop, without a familiarisation period. Feedback came from clinical vignettes, not real patients, so ease of use and true clinical behaviour were not observed. The study tested only content validity, and the authors say further psychometric work is needed. Some confidence interval lower bounds were below thresholds.
The easy way to misread this
Do not conclude that the scale improves low back pain assessment or treatment outcomes. It was judged clear and usable by physiotherapists in workshops, but it has not been tested in real patients or linked to patient outcomes.