Ilett 2000.

Methods	RCT unit of allocation: provider unit of analysis: prescriptions power calculation: not done concealment of allocation: not clear follow up of professionals: done blinded assessment of outcome: done baseline measurement: done reliable primary outcome measure: done protection against contamination: not clear analysis appropriate: no
Participants	112 general practitioners in Perth, Australia treating patients with urinary tract infections, bacterial tonsilitis, otitis media, acute bacterial bronchitis and mild pneumonia
Interventions	1. Academic detailing (by therapeutics advisor) 2. No intervention control
Outcomes	Professional practice: Change in rate of prescribing of recommended and non‐recommended antibiotics Patient: None
Notes	Guidelines for prescribing developed by expert panel (composition of panel and method of consensus not described) in line with published Australian therapeutic guidelines for antibiotics
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear