Translation, validity and reliability of the pain attitudes and beliefs scale for physiotherapists in French.

Background: The Pain Attitudes and Beliefs Scale for Physiotherapists (PABS-PT) questionnaire evaluates manual therapists' biomedical and biopsychosocial beliefs regarding the management of chronic low back pain. Its usage in clinical settings is an important step in the implementation of national guidelines and policies to improve patient management.
Objectives: The objective of this study was to translate the PABS-PT questionnaire into French, to adapt it culturally, and to conduct a psychometric analysis.
Design: Qualitative and cross-sectional study.
Method: The translation process followed published guidelines with cross-cultural validation by an expert committee. We followed a forward and backward translation procedure and an expert committee, including the original author of the questionnaire and a linguistics expert ensuring good cultural adaptation, issued a finalised version. Psychometric analysis of the French version of the questionnaire was conducted among 390 French manual therapists in two phases. The first phase evaluated structural validity as well as external validity compared with the TSK and BBQ questionnaires. Then, reliability and scalability were analysed. The second phase evaluated test-retest reproducibility by sending the same questionnaire 3 months later.
Results: The validity study revealed three subscales: the classic biomedical subscale and two subscales for biopsychosocial beliefs (aetiology of pain and physical activity). With 21 items in total for the PABS-PT-FR, the structural validity scores were good (BM: alpha = 0.82, H = 0.38; Physical Activity: alpha = 0.62, H = 0.32; Aetiology of Pain: alpha = 0.55, H = 0.29).
Conclusions: This study provides a validated tool to assess French physiotherapists' and, more generally, healthcare providers' beliefs about chronic low back pain, with a new insight into the BPS subscale internal construct.
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