Leboeuf‐Yde 2004.

Population (low back pain description; location; setting; data collection period)	Prospective cohort: Chiropractic patients who had recurrent low back pain with no chiropractic treatment in past 6 months ; Norway; Secondary care; Data collection period not reported
Sample size	843
Prognostic factor (type, measure(s) of individual recovery expectations)	GENERAL (3): Will you be on sick leave in 6 weeks? (Yes/No/Don't know), Will you receive disability pension? (Yes/No/Don't know), and How will your low back pain be in 6 weeks? (5‐pt scale) TREATMENT: Will chiropractic treatment help? (Yes/No/Don't know)
Notes	Funding Source: Research Council of Norway; the Swedish Chiropractic Association Conflict of Interest: Not reported