Table 2. Summary of the results of lumbar puncture (LP) in patients with primary progressive multiple sclerosis (PPMS).

CSF parameter	Median (maximum)		interquartile range		Missing data
	Total PPMS cohort	LPD	Total PPMS cohort	LPD	Total PPMS cohort (total number = 254)	LPD (total number = 209)
Cell count (/μl)	2 (101)	3 (101)	1–5	1–5	20	10
Total protein (mg/l)	485 (1775)	485 (1775)	181–323	366–602	21	10
Albumin (mg/l)	252 (1300)	247 (1300)	374–593	176–332	78	63
Alb-Q (x103)%	5.8 (37.8)	5.8 (37.8)	4.3-7-8	4.2–7.9	27	17
Lactat (mmol/l)	1.7 (5.6)	1.7 (2.9)	1.5–1.9	1.5–1.9	153	127
IgG index	0.7 (6.0)	0.8 (6.0)	0.6–1.10	0.6–1.1	75	65
IgGloc	2.70 (271.7)	3.3 (271.7)	0–24.4	0–24.1	75	65
IgA index	0.3 (2.3)	0.3 (2.1)	0.2–0.3	0.3–0.3	78	68
IgAloc	0 (72.7)	0 (72.7)	0	0	78	68
IgM index	0.08 (0.97)	0.08 (0.97)	0.05–0.13	0.05–0.2	78	68
IgMloc	0 (4.5)	0 (2.5)	0	0	78	68

Loc = local synthesis in mg/dl, LP_D: diagnostic lumbar puncture.