© 1992 Oxford University Press
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Diabetes Diagnosed before the Age of 2 Years: Mortality in a British Cohort 817 Years after Onset

*Department of Epidemiology and Public Health, University of Leicester, Clinical Sciences Building Leicester Royal Infirmary, PO Box 65, Leicester LE2 7LX, UK
Department of Paediatrics, Leicester Royal Infirmary Leicester, UK
Childhood diabetes diagnosed before the age of 24 months presents specific management problems. We report here on the establishment (using the British Diabetic Association [BDA] Children's Register) and mortality of a cohort of children with diabetes diagnosed before age 24 months. Children registered during the period 19721981 were traced by contacting consultants or by using the National Health Service Central Registers (NHSCR) of the Office of Popula tion Censuses and Surveys (OPCS). Standardized mortality ratios (SMR) were estimated using person-years of follow-up for each child and age-specific death rates for the England and Wales population for the years 19721989. Of 339 children notified during 19721981, 231 were traced through consultants and 99 of the remaining 108 through the NHSCR. Twenty were found to be ineligible. The cohort available for mortality analysis comprised 310 (97%) of 319 eligible children. Their age at the time the cohort was established was 818 years, and their duration of diabetes 817 years. The male:female ratio is 1.4:1. Of 310 children studied, seven have already died: SMR 5.4(95% Cl: 2.511.5). We have established a large, unique cohort of children with diabetes diagnosed before age 24 months and still living in the UK and Ireland. The natural history including mortality and occurrence of complications will be analysed prospec tively in this cohort and compared to other cohorts of similar disease duration, but later age at onset.
Revised 1 June 1992
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