Scores for pain, disability, handicap, fear-avoidance beliefs, coping strategies and anxiety and depression for 100 patients with chronic low back pain at baseline and at 6-month follow-up, differences in scores and sensitivity to change.

VAS: Visual Analogue Scale; MACTAR: McMaster-Toronto Arthritis Patient Preference Disability Questionnaire; Quebec: The Quebec Back Pain Questionnaire; HADa: Hospital Anxiety and Depression Scale for anxiety; HADd: Hospital Anxiety and Depression Scale for depression; FABQ work: Fear-Avoidance Beliefs Questionnaire for professional activities; FABQ phys: Fear-Avoidance Beliefs Questionnaire for physical activities; CSQ: Coping Strategies Questionnaire, ES: effect size; SRM: standardized response mean*considering priorities defined at baseline at 6-month evaluation;**considering shifts in priorities at 6-month evaluation.