Table 2.

Presenting anatomy

Anatomy	Group; no. (%)			p value
	Total (n = 75)	Supracoronary graft (n = 54)	Root procedure (n = 21)
Root involvement	54 (72.0)	33 (61.1)	21 (100)	< 0.001
Arch repaired*	16 (21.3)	10 (18.5)	6 (28.6)	0.34
Bicuspid valve	1 (1.3)	0 (0)	1 (4.7)	0.11
Tricuspid valve	74 (98.7)	54 (100)	20 (95.3)	0.11
Connective tissue disorder	4 (5.3)	1 (1.9)	3 (14.2)	0.018
Risk factors†	50 (66.7)	34 (63.0)	16 (76.2)	0.28

^*Any procedure involving replacement of aortic tissue distal to the innominate artery, including both hemiarch and total arch replacements.

^†Risk factors include hypertension, pregnancy, inflammatory disease, family history and cocaine use.