Demographic data, CSF, serum and MRI findings in patients with clinically isolated syndrome (CIS) and controls.

Barkhof criteria = 3 of 4 criteria fulfilled, CIS all = all patients with CIS, CIS-CIS = patients with CIS that remained CIS over follow-up, CIS-RRMS = CIS patients with conversion to MS over follow-up, CTRL = controls, EDSS = Kurtzke Expanded Disability Status Scale, MRZR = antibody indexes (AI) for measles, rubella, zoster, two or more AI≥1.5, OCB = oligoclonal bands in cerebrospinal fluid only, Qalb = albumin CSF/serum concentration ratio, QIgG = IgG CSF/serum concentration ratio, NS = not significant, S = statistical significance, * CIS-CIS vs. CIS-RRMS.Relative frequencies (%) are given for discrete variables, median and range for continuous variables.