Hux 1999.

Methods	RCT unit of allocation: provider unit of analysis: episode of care 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: done analysis appropriate: no
Participants	250 general and family practitioners in Ontario, Canada treating patients over 65 years of age with community acquired infections
Interventions	1. Audit and feedback + printed educational materials 2. No intervention control
Outcomes	Professional practice: Change in rate of use of first‐ and second‐line antibiotics Change in costs of antibiotics prescribed
Notes	recommendations for first and second line therapy based on the Ontario Anti‐infective Guidelines for Community‐Acquired Infections, 1994, produced by a provincially funded panel
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear