Table 3:

Factors associated with revised etiologic classification when conventional stroke work-up is supplemented with VW-MR imaging

	OR (95% CI) for Change in Etiologic Classification when Conventional Work-Up is Supplemented with VW-MR Imaging
	Univariate Logistic Regression	Multivariate Logistic Regression
Age	0.97a (0.95–0.99)	0.99 (0.97–1.01)
Sex	1.05 (0.61–1.82)	1.14 (0.55–2.39)
Time interval between symptom onset and VW-MR imaging (days)	1.00 (1.00–1.00)	NA
Etiologic classification based on conventional stroke work-up
Intracranial arteriopathy not otherwise specified	19.59a (7.39–51.91)	8.94a (2.95–27.19)
Intracranial atherosclerotic disease	0.09a (0.04–0.20)	0.15a (0.05–0.41)
Undetermined etiology	0.86 (0.41–1.82)	NA
Vasculitis	1.58 (0.56–4.45)	1.39 (0.42–4.55)
Cardioembolism	0.10a (0.23–0.46)	0.12a (0.02–0.57)
Other determined etiology	0.48 (0.11–2.08)	0.43 (0.09–21.83)
Small-vessel occlusion	5.21 (0.62–44.06)	4.92 (0.54–44.73)
Cervical atherosclerotic disease	0.55 (0.09–3.33)	NA
Arterial dissection	1.39E + 9 (0.001 to ∝)	NA
Reversible cerebral vasoconstriction    syndrome	0.41 (0.04–4.95)	0.39 (0.03–4.83)

Note:—NA indicates not applicable as a factor; not included in the multivariate logistic regression.

^aStatistically significant.