Figure 2From: Chronic cerebrospinal venous insufficiency is not associated with cognitive impairment in multiple sclerosis Cognitive profiles of chronic cerebrospinal venous insufficiency (CCSVI) negative (n = 45) and positive (n = 64) multiple sclerosis patients. Each value represents a z score based on previously published normative data accounting for demographic variables. There are no significant differences for any test.Back to article page