Diabetes Care, Vol 16, Issue 6 926-928, Copyright © 1993 by American Diabetes Association

ARTICLES

Epidemiology of IDDM in southern Chinese children in Hong Kong

GW Wong, SS Leung and SJ Oppenheimer
Department of Pediatrics, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, N.T.

OBJECTIVE--To provide reliable data on the incidence of IDDM in southern Chinese children in Hong Kong. RESEARCH DESIGN AND METHODS--A registry was established in 1991 to collect childhood IDDM cases retrospectively and prospectively from four districts in Hong Kong. The study included all newly diagnosed cases of IDDM with onset < 15 yr of age from 1 January 1986 to 31 December 1990. Primary ascertainment was based on review of medical records at a regional hospital serving the four districts. An independent school survey validated registry data. RESULTS--The completeness of ascertainment was 93.8%. The age-standardized incidence of IDDM was 2.0/100,000/yr with the 95% confidence interval of 1.2-3.0/100,000/yr for children < 15 yr of age during the study period. The incidence rates/100,000/yr for the three age-groups were: < or = 4 yr, 0.8; 5-9 yr, 2.2; 10-14 yr, 2.8. The incidence for males was 1.5/100,000/yr (95% confidence interval 0.7-2.9/100,000/yr) and for females, 2.4/100,000/yr (95% confidence interval 1.3-4.0/100,000/yr). CONCLUSIONS--This study documents a very low incidence rate of childhood IDDM in southern Chinese in Hong Kong.
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