Biological risk factors for coronary artery disease among adults residing in rural area of North Karnataka, India.

Coronary artery disease (CAD) accounts for 60% of all deaths and 47% of burden of diseases which is progressively increasing in rural population in terms of absolute numbers. Biological risk factors contribute significantly to the cardiovascular burden. Hence, this study was undertaken to assess the biological risk factors among adults residing in rural area.

A community-based cross-sectional study conducted among 980 adults aged between 20 and 60 years residing in rural area of Belagavi district, India. World Health Organization-STEPS-based predesigned questionnaire was used for data collection by house-to-house visit after obtaining written informed consent. Sociodemographic variables and biological risk factors which included hypertension, self-reported diabetes mellitus, overweight, and obesity were assessed. Statistical analysis was done using Pearson's Chi-square test and P value less than 0.05 was considered significant.

In the present study, 48.8% were men and 51.2% were women. Prevalence of hypertension was 26.6%, self-reported diabetes mellitus 6.3%, overweight 26.7%, and obesity was 7.0%. Men had higher prevalence of hypertension and overweight, whereas women had higher prevalence of diabetes and obesity. A significant gender difference was noted with the biological risk factors for CAD (P < 0.05). Advancing age, lesser education, and retirement from the job were the contributors for the increasing prevalence of these risk factors (P < 0.05); however, the socioeconomic status did not show any influence (P > 0.05).

Biological risk factors, which included hypertension, diabetes, and overweight, were observed in a significantly higher proportion among men, whereas women were more obese with a significant higher proportion. Advancing age, lesser education, and retirement from the job were the contributors for the increasing prevalence of these risk factors.