Banait 2000.

Methods	Design: RCT (Practice randomised 2 arm trial) Randomisation concealment: DONE (but see note) Follow up: Providers: DONE Patients: NOT CLEAR Blinded assessment: DONE/NOT CLEAR Baseline: DONE/NOT CLEAR Reliable outcomes: DONE/NOT CLEAR Protection against contamination: DONE
Participants	UK General practitioners in 114 general practices in Salford and Trafford Health Authority. Proportion of eligible providers who participated: 99.1% (114/115 practices) 33/57 (58%) of intervention practices received the intervention. Clinical area of interest: dyspepsia
Interventions	(1) Consultant led educational seminars plus paper copies of guidelines. Reinforcement practice visit at 3 months. (2) Paper copies of guidelines
Outcomes	Process: Appropriateness of referral for upper gastrointestinal endoscopy Findings at endoscopy Prescribing costs for acid suppressing drugs Requests for laboratory tests for Helicobacter Pylori
Notes	EDUCATIONAL INTERVENTION Allocation used minimisation based on practice size, fundholding status, previous expenditure on NSAIDs and previous involvement in a guideline initiative.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Low risk	A ‐ Adequate