Pratesi 1986.

Methods	R = unknown Duplex and clinical FU: unknown Crossovers: unknown Exclusions during trial: unknown Patients lost to FU: unknown
Participants	Italy 90 patients 100 operations Ratio: male:female 6:5 Mean age: unknown 10% asymptomatic carotid disease % stenosis: unknown Comparability: age, sex, vascular risk factors not reported by treatment group
Interventions	Rx: % autologous vein or synthetic (unknown) Control: primary closure Shunt: unknown indication Aspirin before surgery, unknown after surgery
Outcomes	Death < 30 days and FU period Stroke < 30 days and FU period Restenosis FU period (by DSA)
Notes	Ex: unknown FU: 2 years
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	C ‐ Inadequate