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Table 1 Demographics and patient history for Belgian and Japanese patients

From: Differences of patients’ characteristics in acute type A aortic dissection – surgical data from Belgian and Japanese centers-

Variables Belgium
(n = 237)
Japan
(n = 250)
p Value
Gender (Men/Women) 169/68 128/122 < 0.0001
Age (yrs) 59.3 ± 12.7 63.3 ± 11.3 < 0.0001
Age < 40 yrs 13 (5.5%) 5 (2%) 0.0416
Age ≥ 80 yrs 10 (4.2%) 19 (7.6%) 0.1151
Body Mass Index 26.4 ± 4.1 24.2 ± 3.7 < 0.0001
Hypertension 156 (65.8%) 123 (49.2%) 0.0002
Known aortic aneurysm (≥ 4 cm) 51 (21.5%) 149 (59.6%) < 0.0001
Bicuspid aortic valve 5 (2.1%) 1 (0.4%) 0.1008
Marfan syndrome 7 (3%) 7 (2.8%) 0.9192
Other connective tissue disease 2 (0.8%) 0 (0%) 0.1455
Pregnant 2 (0.8%) 0 (0%) 0.1455
Drug 2 (0.8%) 0 (0%) 0.1455
Trauma 1 (0.4%) 0 (0%) 0.3039
Iatrogenic 4 (1.7%) 0 (0%) 0.0391
Previous cardiac operation 15 (6.3%) 4 (1.6%) 0.0071
Post cardiac operation within hospital stay 3 (1.3%) 0 (0%) 0.0744
Post cardiac operation within 2 years 13 (5.5%) 1 (0.4%) 0.0008