Petersen 2007.

Population (low back pain description; location; setting; data collection period)	Randomized Controlled Trial: People referred to an outpatient rheumatology clinic for low back pain; Denmark; Secondary care; August 1996 ‐ December 1998
Sample size	260
Prognostic factor (type, measure(s) of individual recovery expectations)	GENERAL: Certainty of working 6 months after treatment (11 pts) SELF‐EFFICACY: Expecting problems coping with future tasks (11 pts)
Notes	Funding Source: The Danish Physiotherapy Organization; Madsens Fund; The Danish Rheumatism Association Conflict of Interest: None declared aStudy includes a recovery outcome based on categorisation of work, pain, and/or function outcomes