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

Table 1

Age-adjusted incidence of RRMS and PPMS per 10⁵ person-years with 95% CIs and F/M ratios from 1981 to 2010 in ten-year periods.

Disease course		RRMS				PPMS
Period	Person-years	Number of new cases	Incidence		F/M	Number of new cases	Incidence		F/M
			I	95% CI			I	95% CI
1981–1990	6208067	280	4.2	3.7–4.6	1.9	80	1.2	0.9–1.4	1.6
1991–2000	6142661	526	8.5	7.8–9.2	2.0	72	1.2	0.9–1.4	1.9
2001–2010	6326284	613	9.7	8.9–10.5	2.3	46	0.7	0.5–0.7	1.2