title: Incidence of type I diabetes mellitus in Navarre, Spain (1975-91).
abstract: The aim of this study was to ascertain the incidence of Type 1 diabetes mellitus in Navarre, an autonomous community in northern Spain. Subjects were patients who presented with diabetes between 1975 and 1991, age range 0-16 years, resident in Navarre at the onset of symptoms. Endocrinologists in outpatient centres and hospitals (both public and private) in Navarre were the primary source of data, while secondary sources were: independent general practitioners, health centre paediatricians and the Child-Youth Diabetics Parents' Association of Navarre. The degree of ascertainment was 97.8%. Average annual incidence of diabetes detected was 9.54/100000 (95% CI 8.2-11.1) in the 0-14 year-old group. The least incidence was observed in 1976 and highest in 1990. The incidence in males (9.71/100000) was higher than in females (7.83/100000). The highest incidence was observed in the 10-14 year-old group (13.70/100000) when analysed by groups. No seasonal variation in the onset of diabetes was observed. These results suggest a significant increase in the incidence of type 1 diabetes between 1975 and 1991.
authors.affiliation: Department of Paediatric Endocrinology, Hospital Virgen del Camino Pamplona, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Chueca
authors.forename: M
authors.initials: M
authors.lastname: Oyarzabal
authors.forename: F
authors.initials: F
authors.lastname: Reparaz
authors.forename: J M
authors.initials: JM
authors.lastname: Garagorri
authors.forename: A
authors.initials: A
authors.lastname: Sola
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003922:Diabetes Mellitus, Type 1 / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012621:Seasons; D013030:Spain / Q000453:epidemiology