Clinical and demographic characteristics of male MS patients included in the national registry-RelevarEM. Does sex or phenotype make the difference in the association with poor prognosis?

•Data in cohort MS studies is seldom disaggregated by sex and males are poorly considered.•Results in MS studies may be markedly biased by the female predominance of the disease.•Men present as double the frequency of PPMS than women.•Clinical and demographic data differ between men and women mostly...

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