Table 5 Gadolinium-enhancing MRI lesions

Visit/no. of gadolinium-enhancing lesionsPlaceboIFNβ-1ap Value*
Values are expressed as no. of subjects (% of total available scans).
* Wilcoxon rank sum test.
IFNβ-1a = interferon β-1a.
Baseline207 (100)210 (100)
    0136 (66)130 (62)
    135 (17)34 (16)
    211 (5)13 (6)
    35 (2)10 (5)
    ≥420 (10)23 (11)0.350
Month 12192 (100)189 (100)
    0131 (68)165 (87)
    126 (14)14 (7)
    213 (7)5 (3)
    33 (2)2 (1)
    ≥419 (10)3 (2)<0.001
Month 24186 (100)180 (100)
    0133 (72)156 (87)
    120 (11)17 (9)
    26 (3)2 (1)
    312 (6)2 (1)
    ≥415 (8)3 (2)<0.001