Épidémiologie de la myasthénie grave en Ontario, Canada.

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Épidémiologie de la myasthénie grave en Ontario, Canada.

Message par PBoulanger » 21 nov. 2015 03:38

:hi:

Lu sur publimed une étude intitulée :
Épidémiologie de la myasthénie grave en Ontario, Canada.
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Neuromuscul Disord. 2015 Oct 27. pii: S0960-8966(15)00762-2. doi: 10.1016/j.nmd.2015.10.009.
Epidemiology of myasthenia gravis in Ontario, Canada.
Breiner A1, Widdifield J2, Katzberg HD3, Barnett C3, Bril V3, Tu K4.

Abstract

Incidence and prevalence estimates in myasthenia gravis have varied widely.

Recent studies based on administrative health data have large sample sizes but lack rigorous validation of MG cases, and have not examined the North American population.
Our aim was to explore trends in MG incidence and prevalence for the years 1996-2013 in the province of Ontario, Canada (population 13.5 million).

We employed a previously validated algorithm to identify MG cases. Linking with census data allowed for the calculation of crude- and age/sex-standardized incidence and prevalence rates for the years 1996-2013.

The regional distribution of MG cases throughout the province was examined. Mean age at the first myasthenia gravis encounter was 60.2 ± 17.1 years. In 2013, there were 3611 prevalent cases in Ontario, and the crude prevalence rate was 32.0/100,000 population. Age- and sex-standardized prevalence rates rose consistently over time from 16.3/100,000 (15.4-17.1) in 1996 to 26.3/100,000 (25.4-27.3) in 2013. Standardized incidence rates remained stable between 1996 (2.7/100,000; 95% CL 2.3-3.0) and 2013 (2.3/100,000; 2.1-2.6). Incidence was highest in younger women and older men, and geographic variation was evident throughout the province.

In conclusion, this large epidemiological study shows rising myasthenia gravis prevalence with stable incidence over time, which is likely reflective of patients living longer, possibly due to improved disease treatment. Our findings provide accurate information on the Canadian epidemiology of myasthenia gravis and burden for health care resources planning for the province, respectively.

Copyright © 2015 Elsevier B.V. All rights reserved.
Amicalement,
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