Table 1. Comparisons of clinical and demographic features among the MS and OND subgroups.

	CIS (n. 24)	RRMS (n. 16)	PrMS (n. 11)	dementia (n. 7)	CIDP (n. 11)
female/male°	18/6	12/4	5/6	4/3	0/11
mean age at onset (SD) years*	30.8 (8.4)	26.9 (9.6)	39.4 (16.2)	60.6 (9.7)	52.8 (17.2)
mean disease duration at LP (SD) months∧	5.0 (6.2)	16.0 (27.9)	176.6 (157.6)	23.2 (15.6)	62.8 (92.0)
mean EDSS baseline (SD)	1.9 (1.0)	2.0 (0.7)	4.5 (0.9)	–	–
OB (mean no, SD)	13.8 (7.7)	12.5 (7.3)	11.3 (8.2)	–	–

Footnote: LP = Lumbar Puncture; OB = oligoclonal bands.

Fisher’s exact test: °p = 0.0004;

Kruskall-Wallis test: *Age at onset: p = 0.0001; ∧Disease duration at LP: p = 0.0001.