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Göteborgs universitets publikationer

High nationwide incidence of multiple sclerosis in Sweden

Författare och institution:
Cecilia Ahlgren (Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap och rehabilitering); Anders Odén (Institutionen för matematiska vetenskaper, matematisk statistik, Chalmers/GU); Jan Lycke (Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap och rehabilitering)
Publicerad i:
PLoS ONE, 9 ( 9 ) s. e108599
ISSN:
1932-6203
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2014
Språk:
engelska
Fulltextlänk:
Fulltextlänk (lokalt arkiv):
Sammanfattning (abstract):
Over recent years increased MS incidence, primarily in women, has been reported. We recently reported an unexpectedly high MS prevalence of 189/100,000 in Sweden. In the present study we estimated the nationwide age- and gender-specific MS incidence and the sex ratio in Sweden between 2001 and 2008. MS patients were identified by linking two nationwide health data registers, and the Swedish population register. The earliest registered date of MS diagnosis was determined. By logistic regression, the probability of the date of MS diagnosis being within the incidence period, depending on age and time was estimated for a subset of patients and applied to other patients. By Poisson regression, the hazard functions for the incidence of MS diagnosis were estimated. The expected number of MS patients was 7,361.4. The incidence in the average population of 9,054,658 was 10.2 per 100,000 person-years, and 6.2 and 14.0 per 100,000 person-years for men and women, respectively. The crude female to male ratio was 2.26. No increase of incidence or change of sex ratio was observed from 2001 to 2008. In conclusion, the average MS incidence in Sweden from 2001 to 2008 was 10.2 per 100.000, which was considerably higher than previous regional Swedish estimates of 4.3-6.4. No increase of female to male ratio of MS during the study period was observed. We provide supplementary data that can be used as tools for examining excess MS risk in different study materials.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
MEDICIN OCH HÄLSOVETENSKAP ->
Klinisk medicin
Postens nummer:
206229
Posten skapad:
2014-11-21 10:51
Posten ändrad:
2016-07-18 14:05

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