Dionne 1997.

Population (low back pain description; location; setting; data collection period)	Prospective cohort: People consulting a primary care physician for back pain; United States of America; Primary care; 1989 ‐ 1990
Sample size	1213
Prognostic factor (type, measure(s) of individual recovery expectations)	GENERAL: Expectation of continued pain (5 pts)
Notes	Funding Source: Agency for Health Care Policy and Research; The National Institute for Dental Research; National Health Research and Development Program of Canada Conflict of Interest: Not reported aStudy does not present sufficient data to be included in meta‐analyses (univariate), but does provide some measure of statistical significance