Group A (N = 41)

Group B (N = 56)

Group C (N = 49)

P value

%

n

%

n

%

n

Patient demographics

Age (y, $\overline{x}\pm s$ )

49.76 ± 11.67

51.75 ± 9.77

47.24 ± 8.15

0.068

Sex (male, %)

35

85.4

49

87.5

41

83.7

0.855

Hypertension

36

87.8

40

71.4

36

73.5

0.136

Diabetes

3

7.3

5

8.9

5

10.2

0.892

CHD

2

4.9

4

7.1

5

10.2

0.628

Preoperative indication

Diameter > 45 mm

16

39.0

13

23.2

10

20.4

0.104

Aura rupture

6

14.6

3

5.4

2

4.1

0.123

Repeated pain

7

17.1

8

14.3

4

8.2

0.428

Progression of dissection

6

14.6

5

8.9

3

6.1

0.385

Insufficient perfusion of vital organs

8

19.5

9

16.1

5

10.2

0.453

other

7

17.1

21

37.5

26

53.1

0.002