Emslie 1993.

Methods	Design: RCT (Practice randomised 2 arm trial) Randomisation concealment: NOT CLEAR Follow up: Providers: NOT CLEAR Patients: DONE Blinded assessment: NOT DONE Baseline: NOT CLEAR Reliable outcomes: NOT CLEAR Protection against contamination: DONE
Participants	UK General practitioners in 82 general practices in Grampian region of Scotland. Proportion of eligible practices who participated: 95.3% (82/86 practices participated but nine individual general practitioners from participating practices declined to take part in study). Clinical area of interest: infertility
Interventions	(1) Locally developed guidelines plus structured record sheet (incorporating reminders) for general practice management and referral of infertile couples disseminated by mail. (2) No intervention (control GPs were informed that they would receive the guidelines at the end of the study).
Outcomes	Process: Compliance with guidelines in particular whether adequate sexual history was taken, whether couple were appropriately examined and investigated (see note).
Notes	EDUCATIONAL INTERVENTION Differences in data collection methods between study and control GPs.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear