Michaelson 2004.

Population (low back pain description; location; setting; data collection period)	Prospective cohort: People with chronic low back or neck pain referred to inpatient rehabilitation centre; Sweden; Secondary care; August 1997 ‐ November 1999
Sample size	167
Prognostic factor (type, measure(s) of individual recovery expectations)	SELF‐EFFICACY: Optimism Index (10 items)
Notes	Funding Source: VINNOVA; EG mal 1 Sapmi Conflict of Interest: Not reported aStudy includes a recovery outcome based on categorisation of work, pain, and/or function outcomes bStudy does not present sufficient data to be included in meta‐analyses (multivariate), but does provide some measure of statistical significance