© 1989 Oxford University Press
research-article |
Ethnicity and Other Characteristics Predictive of Coronary Heart Disease in a Developing Community: Principal Results of the St James Survey, Trinidad
*MRC Epidemiology and Medical Care Unit, Northwick Park Hospital Harrow, Middlesex HA1 3UJ, UK.
**The Caribbean Epidemiology Centre (PAHO/WHO) Port of Spain, Trinidad.
Department of Epidemiology and Population Studies, London School of Hygiene and Tropical Medicine Keppel Street, London WC1E 7HT, UK.
Government Nutrition Laboratories Port of Spain, Trinidad.
§Department of Chemical Pathology St Thomas' Hospital, London SE1 7EH, UK.
Miller G J (MRC Epidemiology and Medical Care Unit, Northwick Park Hospital, Harrow, Middlesex HA1 3UJ, UK) Beckles G L A, Maude G H, Carson D C, Alexis S D, Price S G L and Byam N T A. Ethnicity and other characteristics predictive of coronary heart disease in a developing community. Principal Results of the St. James Survey, Trinidad. International Journal of Epidemiology 1989; 18: 808–817.
A ten-year community survey was undertaken to investigate the high coronary heart disease (CHD) incidence among people of Indian (South Asian) descent in Trinidad, West Indies. Of 2491 individuals aged 35–69 years, 2215 (89%) were examined and 2069 (83%) found to be clinically free of CHD at baseline. After exclusion of 71 of minority ethnic groups, 786 African, 598 Indian, 147 European and 467 adults of Mixed descent were followed for CHD morbidity and mortality. In both sexes, adults of Indian origin had higher prevalence rates of diabetes mellitus, a low concentration of high-density lipoprotein (HDL) cholesterol, and recent abstinence from alcohol than other ethnic groups. Indian men also had larger skinfold thicknesses than other men. In participants free of CHD at entry, the age-adjusted relative risk of a cardiac event believed due to CHD was at least twice as high in Indian men and women as in other ethnic groups. In men, blood pressure, diabetes mellitus and low-density lipoprotein(LDL) cholesterol concentration were positively and independently related to risk of CHD, whereas alcohol consumption and HDL cholesterol concentration were inversely associated with risk after allowing for age and ethnic group. The ethnic contrasts in CHD persisted when these characteristics were taken into account. In the smaller sample of women, only ethnic group was predictive of CHD as defined. The failure of point estimates of risk to explain the high CHD incidence in Indians calls for focus on age of onset of risk and examination of other potential risk factors such as insulin concentration.
Received 1 March 1989
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