Diabetes Care, Vol 17, Issue 6 599-601, Copyright © 1994 by American Diabetes Association
Increasing incidence of type I diabetes in The Netherlands. The second nationwide study among children under 20 years of age
D Ruwaard, RA Hirasing, HM Reeser, S van Buuren, K Bakker, RJ Heine, RA Geerdink, GJ Bruining, GJ Vaandrager and SP Verloove-Vanhorick
National Institute of Public Health and Environmental Protection, Bilthoven, The Netherlands.
OBJECTIVE--A nationwide retrospective study was conducted to assess the
incidence of type I diabetes in The Netherlands among children < 20
years of age in 1988-1990. The first study with a similar design covered
1978-1980. RESEARCH DESIGN AND METHODS--The capture-recapture census method
was chosen for analysis of the data. A questionnaire was sent to all Dutch
pediatricians and internists, and for the ascertainment, a similar
questionnaire was sent out separately to members of the Dutch Diabetes
Association, which is the national patient association. RESULTS--The
average achieved ascertainment rate was 81%. The ascertainment-adjusted
annual incidence was 13.2/100,000 for 0- to 19-year-old children,
indicating an increase of 23% compared with the 1978-1980 survey; for 0- to
14-year-olds, the increase amounted to 17%. CONCLUSIONS--This study
suggests a sustained increase of type I diabetes in The Netherlands because
the cumulative incidence studied previously in the 1960-1970 birth cohorts
of male army conscripts 18 years of age was also found to rise. In contrast
to Northern European countries, an increase in incidence for the age
category 0-4 years could not be found.