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Background

In the West, urbanization has been accompanied by a rise in the rate of coronary heart disease. This trend has gone hand in hand with an increased consumption of processed, energy-dense food and dependence on machines for physical work. To examine whether a similar trend is underway in northern India, the prevalence of and risk factors for coronary heart disease were compared in rural, semi-urban and urban communities.

Methods and results

A total of 7,169 adults were interviewed and examined during 1995-2000 in cross-sectional cluster sample surveys from a rural area of Haryana (Raipur Rani block), two semi-urban areas of Punjab (Mandi Gobindgarh and Morinda), and Chandigarh city. The study, which covered people in the age-group of 35+ years, also estimated the lipid, glucose and insulin levels of a sub-sample of 186 persons who did not have coronary heart disease or hypertension. The prevalence of coronary heart disease among males in the villages, towns and city was 1.7%, 2.5% and 7.4%, respectively, and among females, 1.5%, 3.4% and 7.1%, respectively. The age-and sex-adjusted prevalence odds ratio of coronary heart disease, in comparison to the villages, was 1.9 (95% CI; 1.1-3.2) in the towns and 4.9 (95% CI: 2.9-8.2) in the city. Hypertension, diabetes, obesity and physical inactivity were significantly more common in the urban areas, while the rate of tobacco smoking was significantly higher in the rural areas (p< 0.05). The alcohol consumption rates for the urban and rural communities were similar (p> 0.05). The quantity of the food items commonly consumed, as well as the frequency with which …