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Published on: May 6, 2013
Incidence of Type 1 diabetes in children in Cáceres, Spain, during 1988-1999
R E Lora-Gómez1, F M Morales-Pérez, F J Arroyo-Díez
1Pediatric Endocrinology Section, Department of Pediatrics, Complejo Hospitalario de Cáceres, Cáceres, Spain. ricardolora1@yahoo.es
Insights
The incidence of Type 1 diabetes in children under 14 in Cáceres is moderately high, with higher rates observed in older children and during autumn/winter. This finding challenges the north-to-south decrease hypothesis in Europe.
Area of Science:
- Pediatrics
- Epidemiology
- Endocrinology
Background:
- Type 1 diabetes (T1D) is a significant global health concern in pediatric populations.
- Understanding regional incidence variations is crucial for public health planning and resource allocation.
Purpose of the Study:
- To determine the incidence of T1D in children under 14 years of age in Cáceres, Spain.
- To analyze T1D incidence trends based on age, sex, and season of diagnosis.
Main Methods:
- Retrospective data collection of T1D cases with onset before 14 years between 1988 and 1999.
- Utilized pediatric registries, diabetic association records, and blood-glucose meter data.
- Employed the capture-recapture method for comprehensive case ascertainment, achieving 99.2% completeness.
Main Results:
- Identified 137 new T1D cases over 12 years.
- The average annual incidence was 16.8 per 100,000 children.
- Incidence rates increased with age, peaking in the 10-13 year group, and showed a seasonal pattern with a peak in autumn and winter.
Conclusions:
- Cáceres exhibits a moderately high T1D incidence in children, comparable to other developed Spanish regions and Northern European countries.
- The findings do not support a hypothesis of decreasing T1D incidence from north to south across Europe.
- The study highlights the importance of considering age and seasonal factors in T1D epidemiology.
Aim:
To determine the incidence of Type 1 diabetes in Cáceres in children less than 14 years of age. We tested for differences in incidence by age, sex and season at diagnosis.
Methods:
All Type 1 diabetes cases with onset <14 years of age between 1988 and 1999 were recorded retrospectively. Pediatric Unit registries provided the primary source of ascertainment. The secondary independent data source was based on the registries of local Diabetic Associations, diabetes camp records and guarantee cards of blood-glucose meters. We used the capture-recapture method for ascertainment.
Results:
During the 12-year period, 137 new cases of Type 1 diabetes were identified. Completeness of ascertainment was 99.2%. Average annual observed incidence was 16.8/100,000/year (95% C.I. 14.1-19.8). Age-standardised incidence (world population): 16.5/100,000/year (95% C.I. 13.9-19.6). Average annual incidence for 0-4, 5-9 and 10-13-year-old groups: 12.7/100,000 (95% C.I. 8.8-17.9), 18.2/100,000 (95% C.I. 13.7-23.8) and 19.1/100,000 (95% C.I. 14.2-25.1). The highest age-specific annual incidence rate was found in the 10-13-year age group. There was a seasonal onset pattern, with the highest incidence in autumn and winter. November was the month with the highest number of cases (22/137).
Conclusion:
Cáceres has a moderately high incidence of Type 1 diabetes in children less than 14 years of age, similar to that found in other more developed and densely populated regions of Spain, and in the range of other countries of northern Europe. These data do not support the hypothesis of a decrease in the incidence of the disease from north to south over Europe.
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