A comparison of brain magnetic resonance imaging lesions in multiple sclerosis by race with reference to disability progression

Table 1 Comparison of baseline characteristics between Japanese and Caucasian patients with MS

	Entire study population			Population for T2W-lesion evaluation
	Japanese patients (n = 95)	Caucasian patients (n = 246)	p	Japanese patients (n = 93)	Caucasian patients (n = 72)	p
Female (%)	65 (68.4)	179 (72.8)	0.43	65 (69.9)	48 (66.7)	0.74
Age at time of the MRI, years^a	34.2 ± 8.3	36.9 ± 9.5	0.03	34.0 ± 8.3	35.9 ± 9.8	0.24
Age at first symptom, years^a	26.9 ± 8.9	29.0 ± 8.5	0.03	26.6 ± 8.7	28.3 ± 8.6	0.15
Duration of disease from first symptom, years^a	7.4 ± 6.4	7.9 ± 7.2	0.60	7.4 ± 6.4	7.7 ± 8.1	0.75
EDSS scores^a	2.0 ± 1.7	2.3 ± 1.2	0.008	1.9 ± 1.7	2.2 ± 1.3	0.10
MSSS^a	3.24 ± 2.61	3.84 ± 2.09	0.01	3.19 ± 2.60	3.78 ± 1.92	0.04
Previous exposure of DMDs or immunosuppressive therapy, n (%)	54 (56.8)	70 (28.5)	< 0.0001	53 (57.0)	22 (30.6)	0.0009
Patients with contrast-enhanced lesions, n (%)	53 (55.8)	126 (51.2)	0.47	52 (55.9)	40 (55.6)	1.00

^aValues are expressed as mean ± standard deviation
DMDs Disease modifying drugs, EDSS Kurtzke’s Expanded Disability Status Scale, MS multiple sclerosis, MSSS Multiple Sclerosis Severity Score, T2W T2-weighted

ISSN: 1742-2094