Table 4.

Details of patients undergoing graft insertion

	Non-laminar flow	Laminar flow	P-value
Total patents	46	35
Sex (M:F)	36:10	25:10	0.48*
Mean age (range)	67.4 (19–87)	70.7 (37–83)	0.213 ‡
Mean operative time (range) in minutes	126.4 (30–350)	120.0 (25–225)	0.588 ‡
‘Re-do’ procedures	4 (9%)	2 (6%)	0.694 †
Venous conduit used	6 (13%)	6 (17%)	0.8424*
Groin incision	22 (48%)	16 (46%)	0.778*
Antibiotic prophylaxis given	44 (96%)	35 (100%)	1.0*
Arterial graft infection (requiring graft removal)	9 (8%)	0 (0%)	0.0086 †
Diabetes mellitus	7 (15%)	4 (11%)	0.749 †
Ischaemic heart disease	21 (46%)	10 (29%)	0.117*
Chronic obstructive pulmonary disease	11 (24%)	8 (23%)	0.912*
Surgical site infections	15 (33%)	4 (11%)	0.034 †

^*chi-square test;

^†Fisher’s exact test;

^‡Student’s t-test