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Table 1 Baseline Characteristics at Presentation of Patients With AAAD

From: Association of body mass index with in-hospital major adverse outcomes in acute type A aortic dissection patients in Fujian Province, China: a retrospective study

Variables normal weight group
18.5–23.9 kg/m2 (N = 248)
overweight group 24–27.9 kg/m2 (N = 408) obese group ≥28 kg/m2 (N = 121) P-value
Age, years, mean (SD) 55.7 ± 11.8 51.9 ± 10.9 48.5 ± 11.5 < 0.001a
Male, n (%) 172 (69.4) 329 (80.6) 103 (85.1) < 0.001c
BMI (kg/m2), mean (SD) 21.7 ± 1.5 25.4 ± 1.0 31.6 ± 6.5 < 0.001a
History of
 Smoker, n (%) 108 (43.5) 199 (48.8) 64 (52.9) 0.201c
 Drinker, n (%) 74 (29.8) 147 (36.0) 52 (43.0) 0.040c
Hypertension, n (%)     0.205c
 No 84 (33.9) 114 (27.9) 27 (22.3)  
 Level 1 26 (10.5) 51 (12.5) 14 (11.6)  
 Level 2 44 (17.7) 66 (16.2) 18 (14.9)  
 Level 3 94 (37.9) 177 (43.4) 62 (51.2)  
Type 2 diabetes, n (%) 7 (2.8) 14 (3.4) 8 (6.6) 0.177c
Marfan syndrome, n (%) 11 (4.4) 11 (2.7) 17 (14.0) < 0.001c
Previous cardiac surgery, n (%) 7 (2.8) 10 (2.5) 4 (3.3) 0.870c
Coronary artery heart disease, n (%) 2 (0.8) 2 (0.5) 1 (0.8) 0.854d
Prior Stroke, n (%) 9 (3.6) 23 (5.6) 6 (5.0) 0.512c
Prior Shock, n (%) 1 (0.4) 11 (2.7) 1 (0.8) 0.062d
Prior Resuscitation, n (%) 1 (0.4) 6 (1.5) 2 (1.7) 0.398d
Extension of AAAD, n (%)     0.163c
 Ascending aorta 12 (4.8) 13 (3.2) 3 (2.5)  
 Aortic arch 99 (39.9) 137 (33.6) 38 (31.4)  
 Descending aorta 9 (3.6) 20 (4.9) 2 (1.7)  
 Abdominal aorta and/or beyond 128 (51.6) 238 (58.3) 78 (64.5)  
 Time from symptom onset to surgery(h), median (IQR) 47.6 (39.6–55.6) 39.5 (33.7–45.4) 41.4 (29.2–53.7) 0.276b
  1. aAnalysis of Variance; bKruskal-Wallis tests; cChi-square test; dFisher’s exact test; BMI body mass index, AAAD, acute type A aortic dissection, SD standard deviation, IQR interquartile range