McIsaac 2002.

Methods	RCT unit of allocation: provider unit of analysis: provider power calculation: done concealment of allocation: not clear follow up of professionals: not done blinded assessment of outcome: not clear baseline measurement: not done reliable primary outcome measure: not clear protection against contamination: not done analysis appropriate: yes
Participants	169 family practitioners in Ontario, Canada treating patients over three years of age for sore throat
Interventions	1. Printed educational materials (clinical score management approach for sore throat) + reminders (stickers to apply to patient encounter form encouraging use of the score) 2. Printed educational materials (clinical score management approach for sore throat)
Outcomes	Professional practice: Rate of prescribing unnecessary antibiotics (prescription given to a patient who subsequently has negative throat culture for Group A Strep) Rate of overall antibiotic use Association between prescription rates and physician practice and demographic characteristics
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	D ‐ Not used