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Pediatr Diabetes. 2008 Jun;9(3 Pt 2):62-8. doi: 10.1111/j.1399-5448.2007.00315.x. Epub 2008 Jan 24.

Very high and increasing incidence of type 1 diabetes mellitus in Newfoundland and Labrador, Canada.

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Department of Pediatrics, Memorial University, St. John's, Newfoundland and Labrador, Canada.



To determine the incidence of type 1 diabetes mellitus (T1DM) among children aged 0-14 yr inclusive in the Canadian province of Newfoundland and Labrador (NL).


Prospective and retrospective cohort study of the incidence of T1DM in children aged 0-14 yr from 1987 to 2005. Identified cases during this time period were ascertained from several sources and verified using the capture-recapture technique.


Over the study period, 732 children aged 0-14 yr were diagnosed with T1DM. The incidence of T1DM in this population over the period 1987-2005 inclusive was 35.08 per 100,000 (95% confidence interval: 32.54, 37.62). The incidence over this period increased linearly at the rate of 0.78 per 100 000 per year. There was a significant difference between the incidence of 31.61 per 100,000 for boys in the 0-4-yr age-group and 19.05 per 100,000 for girls in the 0-4-yr age-group (p = 0.001). The incidence was very high throughout the entire province.


The province of NL has one of the highest incidences of T1DM reported worldwide. The incidence is increasing over the 19-yr study period.

[Indexed for MEDLINE]

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