Increasing Incidence in Relapsing-Remitting MS and High Rates among Young Women in Finland: A Thirty-Year Follow-Up

Table 2

Use of MRI scans in the diagnostics of MS by disease courses (RRMS and PPMS) in the study cohort diagnosed from 1981 to 2010.

Period	1981–1990		1991–2000		2001–2010		Total 1981–2010
		%		%		%		%
RRMS cases	280		526		613		1419
All scans/RRMS	113	40	446	85	599	97	1158	82
Brain	102	36	388	74	467	76	957	67
Spinal	5	2	13	2	20	3	38	3
Brain + spinal	6	2	45	9	112	18	163	12
PPMS cases	80		72		46		198
All scans/PPMS	16	20	56	78	43	93	115	58
Brain	9	11	33	46	30	65	72	36
Spinal	1	1	7	10	2	4	10	5
Brain + spinal	6	8	16	22	11	24	33	17