Prevalence of Anti-JC Virus (JCV) Antibodies in the Multiple Sclerosis (MS) Population in Cyprus: A Retrospective Study

Table 3

Analysis of the JCV_AI_index of seropositive patients with a JVC AI index (n = 49) according to prespecified demographics.

Variables	≤0.9	>0.9– ≤ 1.5	>1.5	value^$
Mean age	40.8 ± 7.6	39.7 ± 3.5	38.3 ± 10.2	0.587
Age categories
Age < 30 years	1 (14.3%)	0 (0.0%)	6 (85.7%)
Age ≥ 30 years	7 (17.9%)	3 (7.7%)	29 (74.4%)	0.999
Gender
Male	4 (28.6%)	1 (7.1%)	9 (64.3%)
Female	5 (14.3%)	2 (5.7%)	28 (80.0%)	0.454

^$ value from the Kruskal–Wallis test for mean age and Fisher’s exact test for categorical variables. Age was missing for 3 patients with a JCV AI index.