Reiso 2003.

Population (low back pain description; location; setting; data collection period)	Prospective cohort: People with back disorders that primary healthcare doctors thought would certify them as sick for > 2 months; Norway; Primary care; September 1997 ‐ December 1998
Sample size	190
Prognostic factor (type, measure(s) of individual recovery expectations)	GENERAL: Self‐predicted work status in 4 weeks (3 pts)
Notes	Funding Source: The Norweigan Ministry of Health and Social Affairs Conflict of Interest: None declared