McIsaac 1998.

Methods	RCT unit of allocation: provider unit of analysis: provider/episode of care (each provider contributed only one patient) 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	396 family practitioners in Ontario, Canada treating patients over 15 years of age for sore throat
Interventions	1. Reminder (interactive component of scoring system) + Printed educational materials (sore throat scoring system with explicit management recommendations) 2. Printed educational materials (sore throat scoring system with explicit management recommendations)
Outcomes	Professional practice: Difference in rate of prescribing of oral antibiotics for sore throat Difference in rate of prescribing first‐ and second‐line antibiotics
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear