Bertakis 1987.

Methods	Design: RCT (Patient randomised two arm trial) Randomisation concealment: NOT CLEAR Follow up: Providers: NOT CLEAR Patients: DONE Blinded assessment: NOT CLEAR Baseline: NOT CLEAR Reliable outcomes: NOT CLEAR Protection against contamination: DONE
Participants	US 520 patients attending US Medical Center Clinical area of interest: general management of problem
Interventions	(1) Primary care management in family practice clinic (2) Primary care management in internal medicine clinic
Outcomes	Process: Primary care consultations Emergency room and acute care clinic attendance's Specialist clinic attendances Costs of laboratory tests
Notes	ORGANISATIONAL INTERVENTION
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear