Table 6. Logistic regression analysis to assess the association of total or modified SVD score with risk of vascular cognitive impairment.

	n	OR	95% CI
Total SVD score
Group 1a	15	1.00 (ref)
Group 2b	40	0.941	0.388-2.283
Group 3c	40	2.000	0.769-5.198
Ptrend	0.086
Modified SVD score
Group 1a	23	1.00 (ref)
Group 2b	31	1.089	0.495-2.395
Group 3c	29	1.891	0.792-4.514
Group 4d	12	10.957	1.310-91.649
Ptrend		0.010*

^aTotal or modified SVD score = 0 point. ^bTotal or modified SVD score = 1-2 point(s). ^cTotal or modified SVD score = 3-4 points. ^dModified SVD score = 5-6 points. *P<0.05 by trend analysis in binary logistic regression. Abbreviations: SVD, small vessel disease; OR, odds ratio; CI, confidence interval.