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Table 1 Comparison of preoperative variables

From: Risk factors for 30-day mortality in patients who received DeBakey type I aortic dissection repair surgery

Variables Total
(n = 830)
Survivors
(n = 733)
Non-survivors
(n = 97)
P valuea
Demographic data     
Age (year) 51.5 ± 12.6 51.8 ± 12.4 58.5 ± 12.7  < 0.001
Male (%) 619 (74.8) 555 (75.7) 65 (68.1) 0.108
BMI (kg/m2) 25.8 ± 4.8 25.9 ± 4.8 25.2 ± 4.1 0.150
Medical history     
Hypertension (%) 608 (73.3) 535 (73.0) 73 (75.3) 0.635
Diabetes mellitus (%) 18 (2.2) 17 (2.3) 1 (1.0) 0.711
Previous cardiac surgery (%) 36 (4.3) 32 (4.4) 4 (4.1) 1.000
Previous cardiovascular disease (%) 28 (3.4) 17 (2.3) 11 (11.3)  < 0.001
Cerebrovascular disease (%) 30 (3.6) 25 (3.4) 5 (5.2) 0.382
Pericardial effusion (%) 135 (16.3) 120 (16.4) 15 (15.5) 0.820
Preoperative laboratory data     
WBC (109/L) 11.1 (8.6, 14.1) 11.0 (8.6, 13.9) 11.9 (8.0, 15.5) 0.160
sCr (μmol/L) 81.0 (61.8, 113.0) 80.0 (61.0, 108.2) 92.9 (65.3, 155.2) 0.006
PLT (109/L) 152.1 ± 89.7 153.4 ± 91.1 142.7 ± 78.5 0.150
ALB (g/L) 36.7 ± 4.9 37.0 ± 4.7 34.4 ± 6.1  < 0.001
Fibrinogen (g/L) 2.5 ± 1.4 2.6 ± 1.4 2.2 ± 1.3 0.010
Triglyceride (mmol/L) 1.1 (0.7, 1.5) 1.1 (0.7, 1.6) 1.0 (0.6, 1.5) 0.334
CRP (mg/dl) 22.7 (5.0, 82.8) 23.3 (4.9, 82.4) 22.3 (5.2, 90.5) 0.626
D-dimer (ng/mL) 4.7 (2.5, 9.5) 4.5 (2.3, 9.1) 6.6 (4.0, 17.0) 0.001
INR 1.1 (1.0, 1.2) 1.1 (1.0, 1.2) 1.2 (1.1, 1.3)  < 0.001
  1. Data presented as n (%), median (IQR), or mean ± standard deviation
  2. BMI, body mass index; WBC, white blood cell; SCr, serum creatinine; PLT, platelet; ALB, albumin; CRP, c-reactive protein; INR, international normalized ratio
  3. Bold values indicate significance at P < 0.05
  4. aP values indicate differences between survivors and deceased patients