Hollingworth 2002.

Methods	Type of targeted behaviour: decrease in test ordering (lumbar x‐rays) Study design: ITS Country: UK
Participants	Setting: primary care Number of practices and providers not reported. Analysed 2100 x‐ray referrals Condition: LBP (although only implied because no patients contacted or enrolled)
Interventions	Professional intervention (distribution of educational materials)
Outcomes	Professional practice: number of primary care referrals for radiography of the lumbar spine Patient level: none
Notes	Justification for intervention type: not reported Intervention fidelity: not reported