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Development and content validity of a rating scale for the Pain and Disability Drivers Management Model.
  • Florian Naye,
  • Simon Décary,
Florian Naye
Universite de Sherbrooke Faculte de medecine et des sciences de la sante
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Simon Décary
Université Laval
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Universite de Sherbrooke Faculte de medecine et des sciences de la sante

Corresponding Author:[email protected]

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Rationale, aims and objectives Establishing the biopsychosocial profile of patients with low back pain is essential to personalize care. The Pain and Disability Drivers Management model (PDDM) has been suggested as a useful framework to help clinicians establish the profile. Yet, there is no tool to facilitate its integration into clinical practice. Thus, the aim of this study is to develop and validate a rating scale, in order to rapidly establish the patient’s profile based on the domains of the PDDM. Method The tool was developed in accordance with the principles of COSMIN methodology. We conducted 3 steps: 1) item generation from a comprehensive review, 2) refinement of the scale with clinicians’ feedback, and 3) statistical analyses to assess the content validity. To validate the item assessing with Likert scales, we performed Item level-Content Validity Index (I-CVI) analyses on three criteria with an a priori threshold of >0.78. We conducted Average-Content Validity Index (Ave-CVI) analyses to validate the overall scale with a threshold of >0.9. Results Coherent with the PDDM, we developed a 5-item rating scale with 4 score options. We selected clinical instruments to screen the presence or absence of the categories of each domain. 42 participants provided feedback to refine the clarity, presentation and clinical applicability of the scale. The statistical analysis of the latest version presented I-CVI above the threshold for each item (between 0.94 and 1). The analysis of the overall scale supported its validation (Ave-CVI=0.95 [0.94;0.97]). Conclusion From the 51 biopsychosocial elements contained within the 5 domains of the PDDM, we developed a rating scale that allows to rapidly screen for problematic issues for categories within each domain. The involvement of clinicians in the process allowed us to validate the content of the first scale to establish the patient’s biopsychosocial profile for people with LBP