Table 1 Baseline characteristic before and after propensity score matching

Number

40

46

32

32

Age (years)

37.2 ± 13.5

43.6 ± 15.7

0.047

38.5 ± 11.7

41.7 ± 13.1

0.307

Male (n, %)

28 (70.0%)

31 (67.4%)

0.795

25

28

0.320

BMI (kg/m²)

21.8 ± 3.8

26.7 ± 4.5

< 0.001

22.9 ± 3.5

24.7 ± 3.8

0.053

Unmarried (n, %)

11 (27.5%)

12 (26.1%)

0.883

10

11

0.790

Education level (n, %)

0.529

0.435

 Junior high school education or below

10 (15%)

15 (32.6%)

8

11

 High school diploma

28 (70%)

27 (58.7%)

22

18

 Undergraduate degree or higher

2 (5.0%)

4 (8.7%)

2

3

Employment (n, %)

0.768

0.641

 Unemployment

29 (72.5%)

30 (65.2%)

24

20

 Part time

9 (22.5%)

13 (28.3%)

7

10

 Full time

2 (5.0%)

3 (6.5%)

1

2

Residence (n, %)

0.255

0.511

 City

26 (65.0%)

36 (78.3%)

22

25

 Town

13 (32.5%)

8 (17.4%)

9

7

 Rural

1 (2.5%)

2 (4.3%)

1

0

SBP (mmHg)

119.3 ± 15.2

135.5 ± 25.7

< 0.001

124.4 ± 13.9

130.3 ± 20.5

0.167

Heart rate (beats/min)

81.8 ± 10.5

76.8 ± 14.7

0.077

80.1 ± 10.1

78.5 ± 14.5

0.617

Ascending aorta diameter (mm)

62.9 ± 8.2

38.6 ± 9.6

< 0.001

53.8 ± 6.1

45.5 ± 8.2

< 0.001

Left ventricular ejection fraction (%)

64.4 ± 8.3

63.8 ± 7.9

0.864

62.5 ± 9.2

63.4 ± 7.2

0.664

Preoperative malperfusion (n, %)

5 (12.5%)

3 (6.5%)

0.341

4

2

0.391

Neurological deficit (n, %)

2 (5.0%)

2 (4.3%)

0.886

2

2

1.00

Extent of AD involvement (n, %)

 Root

15 (37.5%)

7 (15.2%)

0.085

12

6

0.273

 Supra-aortic vessels

9 (22.5%)

5 (10.9%)

0.145

5

3

0.450

 Abdominal aorta

30 (75.0%)

32(69.6%)

0.393

25

24

0.768

CABG (n, %)

2 (5.0%)

3 (6.5%)

0.764

2

3

0.641

Root procedure (n, %)

0.006

0.068

 Valve sparing

10 (25.0%)

22 (47.8%)

8

15

 Bentall procedure

30 (75.0%)

24 (52.2%)

24

17