Development and validation of a questionnaire categorizing behavioral strategies in patients with chronic low back pain.

OBJECTIVE: The identification of helpful or unhelpful behavioral strategies for coping with pain would assist in optimizing the management of patients with chronic low back pain (CLBP). The objective was to develop and validate a questionnaire for categorizing behavioral strategies in patients with nonspecific CLBP.

METHODS: (1) Development of a preliminary questionnaire based on a qualitative study in 25 patients with CLBP; (2) Item reduction and questionnaire validation by a multicenter international prospective study in patients with CLBP, with multiple correspondence analysis to identify behavioral profiles, whose characteristics and internal and external validities were assessed; 12-month study of treatments in 58 patients; (3) Evaluation of reproducibility in 30 patients.

RESULTS: (1) The preliminary questionnaire had 87 items in eight pain-coping domains. (2) Three behavioral profiles were identified: effective coping, emotional distress, and kinesiophobia. The questionnaire was reduced to 21 items in seven domains. Cronbach's α indicated moderate internal consistency (0.47-0.66). External validity versus anxiety, depression, and coping strategies was good. As expected, functional restoration program was used more often by patients with kinesiophobia than by those with effective coping (50% vs. 25%, P<0.05). (3) Reproducibility was good (κ=0.70).

CONCLUSION: This new, simple questionnaire allows the identification of three behavioral profiles, thus guiding the development of personalized management programs for NCLBP.