Predisposing factors	Age group, sex, school leaving age, work status, number of children, smoking status and history, amount of regular exercise, 3 questions concerning social support from family and friends
Perceived need factors	Likert pain score for today, Likert pain score for pain at its worst, when back pain started, duration of back pain episodes, description of periodicity, diagnosis, Roland and Morris disability index, disability status
Psychosocial factors	Back beliefs, locus of control (pain control and responsibility for pain management), coping strategies (cognitive coping and helplessness), fear avoidance (fear of physical exercise and work), Zung depression, somatic perceptions