Table 2

Variables associated with 6 month survival

Variable	n (%)	OR	95% CI	p Value
Univariate association of 20 variables and the probability of survival up to 6 months after symptom onset in 65 mechanically ventilated elderly (65 years and older) stroke patients. CI, confidence interval; OR, odds ratio; p was obtained using χ² test.
Male sex	35 (54)	1.00	0.37–2.71	1.00
Age >77.5 years	22 (34)	0.14	0.04–0.53	0.004*
Ischaemic stroke	46 (71)	0.88	0.30–2.62	0.82
Posterior circulation/ infratentorial	15 (23)	0.69	0.21–2.32	0.55
Elective intubation	13 (20)	13.6	2.68–68.6	0.002*
Cardiovascular risk factors
Hypertension	42 (65)	2.58	0.85–7.82	0.10
Diabetes mellitus	28 (43)	1.23	0.45–3.35	0.68
Atrial fibrillation	39 (60)	0.85	0.31–2.34	0.76
Hypercholesterinemia	11 (17)	0.51	0.12–2.12	0.35
Neurological deficits on admission
Coma	27 (42)	0.47	0.17–1.33	0.15
Anisocoria	18 (28)	0.48	0.15–1.55	0.22
Absent unilateral pupillary light reflex	4 (6)	0.48	0.05–4.89	0.54
Absent bilateral pupillary light reflex	9 (14)	0.38	0.07–2.00	0.25
Absent bilateral corneal reflex	8 (12)	0.18	0.02–1.59	0.12
Unilateral Babinski’s sign	26 (40)	2.00	0.72–5.53	0.18
Bilateral Babinski’s sign	15 (23)	0.29	0.07–1.17	0.08
Forced gaze deviation	32 (49)	1.36	0.50–3.68	0.54
Laboratory analysis on admission
White blood count >10/nl	34 (52)	0.31	0.11–0.90	0.032*
C-reactive protein >3 mg/dl	15 (23)	0.74	0.22–2.50	0.62
Glucose >180 mg/dl	21 (32)	0.26	0.07–0.90	0.034*