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Very high and increasing incidence of type 1 diabetes mellitus in Newfoundland and Labrador, Canada
L A Newhook1, M Grant, S Sloka
1Department of Pediatrics, Memorial University, St. John's, Newfoundland and Labrador, Canada. lnewhook@mun.ca
Insights
Newfoundland and Labrador has one of the world's highest rates of type 1 diabetes mellitus (T1DM) in children. This study found the incidence of T1DM is increasing in children aged 0-14 years.
Area of Science:
- Pediatric Endocrinology
- Epidemiology
- Public Health
Background:
- Type 1 diabetes mellitus (T1DM) is a significant global health concern, particularly in pediatric populations.
- Understanding regional incidence patterns is crucial for resource allocation and public health interventions.
Purpose of the Study:
- To determine the incidence of T1DM in children aged 0-14 years in Newfoundland and Labrador (NL).
- To analyze trends and demographic variations in T1DM incidence within this population.
Main Methods:
- A prospective and retrospective cohort study was conducted from 1987 to 2005.
- Case ascertainment utilized multiple sources, with verification through the capture-recapture technique.
Main Results:
- A total of 732 children aged 0-14 years were diagnosed with T1DM during the study period.
- The overall incidence was 35.08 per 100,000 children, with a significant linear increase of 0.78 per 100,000 annually.
- Boys aged 0-4 years showed a higher incidence (31.61 per 100,000) compared to girls (19.05 per 100,000).
Conclusions:
- Newfoundland and Labrador exhibits one of the highest T1DM incidences globally.
- The rising trend in T1DM incidence over the 19-year study period highlights an ongoing public health challenge.
Objective:
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).
Methods:
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.
Results:
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.
Conclusions/Interpretation:
The province of NL has one of the highest incidences of T1DM reported worldwide. The incidence is increasing over the 19-yr study period.
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