Construction and Verification of a Risk Prediction Model for the Occurrence of Delayed Cerebral Ischemia after Aneurysmal Subarachnoid Hemorrhage Requiring Mechanical Ventilation

Table 1

Comparison of the demographic and clinical data between training and verification groups.

Age (years) (%)	Train ()	Validation ()	value
<55	65 (45.14)	26 (43.33)	0.9348
≥55	79 (54.86)	34 (56.67)
Gender (%)
Male	58 (40.28)	19 (31.67)	0.3185
Female	86 (59.72)	41 (68.33)
Modified Rankin scale (mRS) (%)
No	40 (27.78)	23 (38.33)	0.1866
Yes	104 (72.22)	37 (61.67)
Aneurysm localization (%)
Anterior	118 (81.94)	52 (86.67)	0.5363
Posterior	26 (18.06)	8 (13.33)
Intracerebral hemorrhage (%)
No	80 (55.56)	26 (43.33)	0.1504
Yes	64 (44.44)	34 (56.67)
Early brain injury (%)
No	38 (26.39)	19 (31.67)	0.5523
Yes	106 (73.61)	41 (68.33)
External ventricular drain (EVD) (%)
No	40 (27.78)	26 (43.33)	0.0455
Yes	104 (72.22)	34 (56.67)
Rebleeding (%)
No	122 (84.72)	55 (91.67)	0.2683
Yes	22 (15.28)	5 (8.33)
Angiographic vasospasm (%)
No	93 (64.58)	41 (68.33)	0.7247
Yes	51 (35.42)	19 (31.67)
Hypertension (%)
Normal	97 (67.36)	36 (60.00)	0.4662
I	12 (8.33)	8 (13.33)
II	35 (24.31)	16 (26.67)
GCS (%)
≤5	58 (40.28)	26 (43.33)	0.9064
6~8	49 (34.03)	20 (33.33)
≥9	37 (25.69)	14 (23.33)
WFNS (%)
III	12 (8.33)	7 (11.67)	0.7009
IV	59 (40.97)	22 (36.67)
V	73 (50.69)	31 (51.67)
Fisher (%)
I	1 (0.69)	0 (0.00)	0.72
II	2 (1.39)	2 (3.33)
III	27 (18.75)	10 (16.67)
IV	114 (79.17)	48 (80.00)
Delay between diagnosis and treatment (%)
<12 h	84 (58.33)	35 (58.33)	0.4449
12~24 h	39 (27.08)	14 (23.33)
24~48 h	3 (2.08)	4 (6.67)
>48 h	3 (2.08)	3 (5.00)
Failure	5 (3.47)	1 (1.67)
Withdrawal of care	10 (6.94)	3 (5.00)
Treatment (%)
No treatment	15 (10.42)	4 (6.67)	0.5415
Endovascular coiling	92 (63.89)	35 (58.33)
Neurosurgical clipping	35 (24.31)	20 (33.33)
Coiling and clipping	2 (1.39)	1 (1.67)
Delayed cerebral ischemia, DCI (%)
No	104 (72.22)	44 (73.33)	1
Yes	40 (27.78)	16 (26.67)
Mechanical ventilation (days) (median [IQR])	12.000 [5.000, 27.250]	11.000 [6.000, 20.500]	0.6326
Length of stay (days) (median [IQR])	18.500 [7.000, 38.000]	17.000 [7.750, 31.000]	0.58