Magnussen 2007.

Population (low back pain description; location; setting; data collection period)	Randomized Controlled Trial: Individuals receiving disability pension due to back pain for more than 1 year; Norway; Occupational; April 2004 ‐ August 2005
Sample size	431
Prognostic factor (type, measure(s) of individual recovery expectations)	GENERAL: Do you believe you will ever be able to return to work? (Yes/No/Don't know)
Notes	Funding Source: The Norwegian Foundation for Health and Rehabilitation Conflict of Interest: Not reported