Sandstrom 1986.

Population (low back pain description; location; setting; data collection period)	Prospective cohort: People with non‐specific low back pain referred to Department of Orthopaedic Surgery; Sweden; Secondary care; Data collection period not reported
Sample size	52
Prognostic factor (type, measure(s) of individual recovery expectations)	SELF‐EFFICACY: I am afraid to start working again because I don't think I will be able to manage (7 pts)
Notes	Funding Source: The Goteborg Medical Society; The Asker Foundation; The Delegation for Social Research within the Swedish Ministry for Health and Social Affairs Conflict of Interest: Not reported aStudy does not present sufficient data to be included in meta‐analyses (multivariate), but does provide some measure of statistical significance