Table 4 Perioperative outcomes in the risk factor subgroups in the propensity score-matched cases

Total

54

54

Extubation failure

16 (29.6)

3 (5.6)

< 0.001^a

Delayed cerebral ischemia

15 (27.8)

15 (27.8)

1.000^a

Hospital mortality

2 (3.7)

3 (5.6)

1.000^a

Age ≥ 56

21

29

Extubation failure

9 (42.9)

2 (6.9)

0.002

Delayed cerebral ischemia

7 (33.3)

7 (24.1)

0.475

Hospital mortality

2 (9.5)

2 6.9)

0.735

Onset to admission < 2 day

26

23

Extubation failure

10 (38.5)

1 (4.3)

0.004

Delayed cerebral ischemia

11 (42.3)

12 (52.2)

0.490

Hospital mortality

1 (3.8)

2 (8.7)

0.480

WFNS grade > 3

13

13

Extubation failure

9 (69.2)

0 (0)

< 0.001

Delayed cerebral ischemia

9 (69.2)

4 (30.8)

0.050

Hospital mortality

2 (15.4)

0 (0)

0.141