Table 3. Surgical left main revascularisation procedures according to region of enrolment.

CABG procedural characteristics	European Union (n=541)	North America (n=371)	p-value	Odds ratio [95% CI]
Time from randomisation to first procedure, days	8.4±18.4	4.3±4.4	<0.0001	–
Total SYNTAX score (core lab)	27.4±9.9	24.1±9.3	<0.0001	–
Bypass duration, mins	79.8±35.7	87.5±52.7	0.45	–
Off-pump CABG	200/520 (38.5%)	56/359 (15.6%)	<0.0001	3.38 [2.42-4.73]
Cross-clamp duration, mins	54.9±27.6	55.3±27.5	0.98	–
Intermittent cross-clamp</p>	72/320 (22.5%)	109/303 (36.0%)	0.0002	0.52 [0.36-0.73]
Number of grafts per subject, total	2.7±0.8	2.8±0.8	0.30	–
Arterial conduits	1.5±0.7	1.2±0.5	<0.0001	–
Venous conduits	1.0±0.9	1.5±0.9	<0.0001	–
Any internal mammary artery used per individual	511/517 (98.8%)	355/359 (98.9%)	1.00	0.96 [0.27-3.43]
Only arterial grafts used	176/520 (33.8%)	40/359 (11.1%)	<0.0001	4.08 [2.80-5.94]
Number of native vessels bypassed	2.2±0.5	2.3±0.6	0.006	–
Haemodynamic support used during procedure	17/520 (3.3%)	14/359 (3.9%)	0.62	0.83 [0.41-1.71]
Intraoperative epi-aortic ultrasound	11/520 (2.1%)	102/359 (28.4%)	<0.0001	0.05 [0.03-0.10]
Intraoperative transoesophageal echocardiogram	154/520 (29.6%)	225/359 (62.7%)	<0.0001	0.25 [0.19-0.33]
Procedural complications*	46/520 (8.8%)	39/359 (10.9%)	0.32	0.80 [0.51-1.25]
Time from anaesthesia to skin closure, mins	232.5±66.1	257.8±76.7	<0.0001	–
Days of in-patient hospitalisation	14.4±10.6	10.0±6.9	<0.0001	–
Data are n (%) or mean±SD. *Aortic dissection; supraventricular tachycardia; ventricular tachycardia/fibrillation; bradyarrhythmia; deep sternal wound infection; dialysis; hypotension; hypoxaemia; neurologic dysfunction; repeat sternotomy for bleeding; respiratory failure/prolonged intubation; renal failure; sepsis or endocarditis; stroke; injury to a cardiac structure. CABG: coronary artery bypass graft