Sex ratio of multiple sclerosis in Sweden
2013 (English)In: Multiple Sclerosis, ISSN 1352-4585, E-ISSN 1477-0970, Vol. 13, no 1, 46-52 p.Article in journal (Other academic) Published
Sex ratio of multiple sclerosis has been reported from several areas. The disease is more common in women. In Europe the women-to-men ratio varies from 1.1 to 3.4. Recently a study in Canada has reported a significant increased female-to-male ratio in multiple sclerosis.
Our objective was to analyse the development of sex ratio in multiple sclerosis in the Swedish population.
Data from the Swedish MS Register and data from the Swedish National Statistics Office were used to estimate sex ratio by year of birth and year of onset.
In analyse of sex ratio by year of birth there were 8,834 patients (6,271 women and 2,563 men) born during 1931 to 1985. The mean value of women-to-men ratio was 2.62. No clear trend was noted for the women-to-men ratio by year of birth (Spearman’s rho = 0.345, p=0.298, n=11). Patients analysed by year of onset was 9,098 (6,452 women and 2,646 men) during the study time period 1946 until 2005. The mean women-to-men ratio was 2.57. There was no significant change of the women-to-men ratio (Spearman’s rho = -0.007, p = 0.983, n = 12).
Conclusion: In the Swedish patients there was no evidence for an increased womento-men ratio in multiple sclerosis.
Place, publisher, year, edition, pages
2013. Vol. 13, no 1, 46-52 p.
Multiple sclerosis, sex ratio, incidence rate, prevalence proportion, SMSreg
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-74176DOI: 10.1177/1352458512446169ISI: 000313272100009OAI: oai:DiVA.org:liu-74176DiVA: diva2:480857