Non-O blood group is associated with lower risk of in-hospital mortality in non-surgically managed patients with type A aortic dissection

Table 1 Baseline characteristics of study participants

Variable	Surviving	Non-surviving	p value
Variable	(n = 748)	(n = 129)	p value
Age	62 (52–69)	64 (53–72)	0.099
Male gender	595 (79.5)	89 (69.0)	0.008
Blood type O	311 (41.6)	68 (52.7)	0.018
TAAD	282 (37.7)	100 (77.5)	0.000
SBP	158 (137–179)	136 (113–161)	0.000
DBP	91 (78–104)	80 (62–92)	0.000
Receipt of surgery	154 (20.6)	15 (11.6)	0.017
Stent-graft implantation	144 (19.3)	6 (4.7)	0.000
Hypertension	656 (87.7)	108 (83.7)	0.213
Diabetes	72 (9.6)	8 (6.2)	0.212

A Kolmogorov–Smirnov test of normality was performed for all quantitative values. The quantitative values (age, SBP, DBP) were not normally distributed. Data are presented as the median (interquartile range) or number (percentage). values of continuous and categorical variables were obtained by the Mann–Whitney U test or χ² test, respectively. Surgery: aortic arch replacement surgery. Stent-graft: aortic stent-graft implantation
TAAD Stanford type A aortic dissection, SBP systolic blood pressure, DBP diastolic blood pressure

ISSN: 1471-2261