Table 4
Patterns of venous obstruction according to the clinical course
Relapsing-remitting
Secondary progressive
Primary progressive
p Value, χ
2
test
Type A
10
5
0
<0.0001
75%
25%
0%
Type B
19
9
1
66%
31%
3%
Type C
4
5
0
44%
56%
0%
Type D
2
1
9
17%
8%
75%