Underwood 2007.

Population (low back pain description; location; setting; data collection period)	Randomized Controlled Trial: Participants from general practices who consulted for simple low back pain that failed to resolve after their consultation; United Kingdom; Primary care; Data collection period not reported
Sample size	1334
Prognostic factor (type, measure(s) of individual recovery expectations)	TREATMENT: Treatment helpfulness (3 pts)
Notes	Funding Source: Not reported Conflict of Interest: None delcared