, Volume 32, Issue 2, pp 79–83 | Cite as

Increasing incidence of diabetes mellitus in Norwegian children 0–14 years of age 1973–1982

  • G. Joner
  • O. Søvik


A retrospective technique was used to register all newly diagnosed cases of diabetes mellitus in Norwegian children 0–14 years of age during the ten-year period 1973–1982. A total of 1,914 newly diagnosed cases were detected, from an average population of 932,037 children. The degree of ascertainment was near to 99%. The male incidence exceeded the female incidence by 12% (p<0.02). The mean yearly incidence for the ten-year period was 20.5 per 100,000. Comparing the two five-year periods 1973–1977 and 1978–1982, the mean yearly incidence increased from 18.5 to 22.7 per 100,000 (p<0.0001). There was a marked geographic variation with the highest incidence in the south-east and lower incidence in the northern part of the country. However, in the northern part of the country, there was a remarkable increase of the annual incidence from the first to the second five-year period (12.9 vs 19.3 per 100,000). The highest numbers of new cases were detected in the months of January and October, and the lowest numbers in May and July. The seasonal pattern was significantly different from a uniform distribution of new cases throughout the year (p<0.001). The age-specific incidence increased towards a peak at 12 years for both sexes. In conclusion, Norway has a high and apparently increasing incidence of childhood diabetes. The geographic variation and secular trend present challenging clues for a search of etio-pathogenic factors.

Key words

Diabetes mellitus childhood incidence geographic pattern seasonal pattern secular trend 


  1. 1.
    Rewers M (1988) Geographic patterns of childhood insulin dependent diabetes mellitus (IDDM). Diabetes Epidemiology Research International Group. Diabetes 37: 1113–1119Google Scholar
  2. 2.
    Joner G, Søvik O (1981) Incidence, age at onset and seasonal variation of diabetes mellitus in Norwegian children, 1973–1977. Acta Paediatr Scand 70: 329–335Google Scholar
  3. 3.
    Reunanen A, Åkerblom HK, Käär ML (1982) Prevalence and ten-year (1970–1979) incidence of insulin-dependent diabetes mellitus in children and adolescents in Finland. Acta Paediatr Scand 71: 893–899Google Scholar
  4. 4.
    Dahlquist G, Blom L, Holmgren G, Häggöf B, Larsson Y, Sterky G, Wall S (1985) The epidemiology of diabetes in Swedish children 0–14 years — a six-year prospective study. Diabetologia 28: 802–808Google Scholar
  5. 5.
    Christau B, Kromann H, Ortved Andersen O, Christy M, Buschard K, Arnung K, Højland Kristensen I, Peitersen B, Steinrud J, Nerup J (1977) Incidence, seasonal and geographical patterns of juvenile-onset insulin-dependent diabetes mellitus in Denmark. Diabetologia 13: 281–284Google Scholar
  6. 6.
    Lestradet H, Besse J (1977) Prévalence et incidence du diabète juvénile insulino-dépendent en France. Diabète Métab 3: 229–234Google Scholar
  7. 7.
    Matsuura N, Fukushima N, Fukita H, Abe K, Yamada Y, Kashiwao N, Fujieda K, Kata T, Mikami Y, Nohara Y, Fukuda K, Okunu A, Taguchi T, Oyanagi K (1983) Epidemiologic survey of juvenile-onset insulin dependent diabetes mellitus (IDDM) in Hokkaido, Japan, 1973–1981. Tohoku J Exp Med 141 [Suppl]: 181–189Google Scholar
  8. 8.
    Westlund K (1966) Incidence of diabetes mellitus in Oslo, Norway 1925 to 1954. Br J Prev Soc Med 20: 105–116Google Scholar
  9. 9.
    Bratlid D (1976) A preliminary study on the incidence of juvenile diabetes mellitus in Northern Norway. Nordic Council Arct Med Res Rep 15: 54–57Google Scholar
  10. 10.
    Ustvedt HJ, Olsen E (1977) Incidence of diabetes mellitus in Oslo, Norway 1956–1965. Br J Prev Soc Med 31: 251–257Google Scholar
  11. 11.
    Sterky G, Holmgren G, Gustavson KH, Larsson Y, Lundmark KM, Nilsson KO, Samuelson G, Thalme B, Wall S (1978) The incidence of diabetes mellitus in Swedish children 1970–1975. Acta Paediatr Scand 67: 139–143Google Scholar
  12. 12.
    Åkerblom HK, Reunanen A, Käär ML (1980) The incidence of insulin-dependent diabetes mellitus in 0–14 year old children in Finland in 1970–1978. Nordic Council Arct Med Res Rep 26: 60–66Google Scholar
  13. 13.
    Bishop YMM, Fienberg SE, Holland PW (1974) Discrete multivariate analysis: theory and practice. MIT Press, Massachusetts, pp 231–233Google Scholar
  14. 14.
    Rosner B (1986) Fundamentals of Biostatistics. 2nd edn. Duxburry Press, BostonGoogle Scholar
  15. 15.
    North AF, Gorwitz K, Sultz HA (1977) A secular increase in the incidence of juvenile diabetes mellitus. J Paediatr 91: 706–710Google Scholar
  16. 16.
    Lorenzi M, Cagliero E, Schmidt NJ (1985) Racial differences in the incidence of juvenile-onset Type 1 diabetes: epidemiologic studies in southern California. Diabetologia 28: 734–738Google Scholar
  17. 17.
    Stewart-Brown S, Haslum M, Butler N (1983) Evidence for increasing prevalence of diabetes mellitus in childhood. Br Med J 286: 1855–1857Google Scholar
  18. 18.
    Patterson CC, Thorogood M, Smith PG, Heasman MA, Clarke JA, Mann JI (1983) Epidemiology of Type 1 (insulin-dependent) diabetes in Scotland 1968–1976: evidence of an increasing incidence. Diaibetologia 24: 238–243Google Scholar
  19. 19.
    Green A, Andersen PK (1983) Epidemiological studies of diabetes mellitus in Denmark, 3. Clinical characteristics and incidence of diabetes among males aged 0 to 19 years. Diabetologia 25: 226–230Google Scholar
  20. 20.
    LaPorte RE, Fishbein HA, Drash AL, Kuller LH, Schneider BB, Orchard T, Wagener DK (1981) The incidence of insulin-dependent diabetes mellitus in Allegheny County, Pennsylvania (1965–1976). Diabetes 30: 279–284Google Scholar
  21. 21.
    Siemiatycki J, Colle E, Aubert D, Campbell S, Belmonte MM (1986) The distribution of Type I (insulin-dependent) diabets mellitus by age, sex, secular trend, seasonality, time clusters and space-time clusters: evidence from Montreal, 1971–1983. Am J Epidemiol 124: 545–560Google Scholar
  22. 22.
    Vaandrager GJ, Braining GJ, Veenhof FJ, Drayer NM (1984) Incidence of childhood diabetes in The Netherlands: a decrease from north to south over North-Western Europe? Diabetologia 27: 203–206Google Scholar
  23. 23.
    Dahlquist G, Gustavson KH, Holmgren G, Hagglöf B, Larsson Y, Nilsson KO, Samuelson G, Sterky G, Thalme B, Wall S (1982) The incidence of diabetes mellitus in Swedish children 0–14 years of age. A prospective study 1977–1980. Acta Paediatr Scand 71: 7–14Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • G. Joner
    • 1
    • 3
  • O. Søvik
    • 2
  1. 1.Department of PaediatricsAskim HospitalNorway
  2. 2.Department of PaediatricsUniversity of BergenNorway
  3. 3.Hormone LaboratoryAker University HospitalOslo 5Norway

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