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

Figure 2

F/M ratios in ten-year age groups. F/M ratio in RRMS remained about twofold or higher from 20 to 59 years and in PPMS ratio was about 1 : 1, except for a slightly higher ratio in the 40–49 age group. The F/M ratio in RRMS is significant in age group younger than 20 years, where the ratio of women to men was 5 : 1 ( = 34/7 cases), and no PPMS cases were observed.