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Table 2 CCSVI classification by MS subtype

From: Clinical correlates of chronic cerebrospinal venous insufficiency in multiple sclerosis

CCSVI Variables All MS
n= 273
RR-MS
n= 181
SP-MS
n= 80
PP-MS
n= 12
p-value
CCSVI diagnosis 153 (56.0%) 89/181 (49.2%) 58/80 (72.5%) 6/12 (50.0%) 0.002
Criterion 1 127 (46.5%) 76 (42.0%) 45 (56.2%) 6 (50.0%) 0.10
Criterion 2 98 (35.9%) 53 (29.3%) 40 (50.0%) 5 (41.7%) 0.005
Criterion 3 173 (63.4%) 115 (63.5%) 52 (65.0%) 6 (50.0%) 0.60
Criterion 4 28 (10.3%) 12 (6.6%) 15 (18.8%) 1 (8.3%) 0.012
Criterion 5 31 (11.4%) 12 (6.6%) 19 (23.8%) 0 (0%) < 0.001
Number of abnormal criteria 1.7 ± 1.1 1.5 ± 1.1 2.2 ± 1.1 1.5 ± 1.0 < 0.001
VHISS 2.9 ± 1.9 2.6 ± 1.8 3.7 ± 2.0 2.5 ± 1.6 < 0.001
  1. MS multiple sclerosis; PP primary progressive, PR progressive relapsing; RR relapsing-remitting; SP secondary progressive; VHISS venous hemodynamic insufficiency score.