Table 2.

Univariate analysis of the factors associated with prolonged mechanical ventilation (n = 108)

Variable	MV ≥ 14 days (n = 32)	MV < 14 days (n = 76)	P value
Age (years)	63.69 ± 11.68	57.09 ± 12.41	0.012*
Sex, male	9 (28.1)	21 (27.6)	0.960
Weight (kg)	64.00 ± 12.39	61.31 ± 12.45	0.306
DM	8 (25.0)	5 (6.6)	0.007*
HTN	21 (65.6)	32 (42.1)	0.026*
Initial E	2.47 ± 1.32	3.32 ± 1.11	0.001*
Initial M	4.81 ± 1.33	5.37 ± 1.32	0.048*
Initial V	2.31 ± 1.66	3.76 ± 1.80	0.000**
Initial GCS	9.59 ± 3.78	12.45 ± 3.78	0.001*
Initial WBC	14.81 ± 5.97	12.58 ± 4.83	0.045*
Initial WBC > 10,000	24 (75.0)	48 (63.2)	0.233
Initial WBC > 12,000	21 (65.6)	36 (47.4)	0.083
Initial WBC > 15,000	15 (46.9)	20 (26.3)	0.037*
EVD	24 (75.0)	44 (57.9)	0.119
Hunt and Hess grade 3–5	27 (84.4)	29 (38.2)	0.000**
WFNS scale score 3–5	24 (75.0)	26 (34.2)	0.000**
Modified Fisher Grade (III, IV)	28 (87.5)	55 (72.4)	0.089

Data are presented as the mean ± SD or as n (%)

*, **Significant difference at *P < 0.05 and **P < 0.001

EVD External ventricular drain