Patency of conduits in patients who received internal mammary artery, radial artery and saphenous vein grafts

Table 5 Multivariate comparison of patency according to conduit

Comparison	Perfect patency n (%)	P (GLMM)	Patency n (%)	P (GLMM)
IMA, RA, SVG		< 0.001		0.049
IMA vs. RA	60/62 (96.8) 71/77 (92.2)	0.309	60/62 (96.8) 72/77 (93.5)	0.169
IMA vs. SVG	60/62 (96.8) 10/57 (17.5)	< 0.001	60/62 (96.8) 47/57 (82.5)	0.021
RA vs. SVG	71/77 (92.2) 10/57 (17.5)	< 0.001	72/77 (93.5) 47/57 (82.5)	0.175
Arterial, SVG		< 0.001		0.037
Arterial vs. SVG	131/139 (94.2) 10/57 (17.5)	< 0.001	132/139 (95.0) 47/57 (82.5)	0.037

P (GLMM) P value adjusted for patient level effects and other risk factors, GLMM generalised linear mixed model analysis (see Methods for variables), IMA internal mammary artery, RA radial artery, SVG saphenous vein graft, see Supplementary Materials for sensitivity testing, univariable analysis, see Supplement Table S2

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