To determine the association of socio-economic status (SES) and prevalence of hypertension and its risk factors in a rural population, a cross sectional survey was conducted in two randomly selected villages in the Moradabad district in North India. There were 1935 residents aged over 25 (984 men and 951 women) who were randomly selected and categorised into social classes 1-4 depending upon SES based on occupation, housing conditions, land holding, total per capita income, ownership of consumer durables and education. The prevalence of hypertension diagnosed by JNC V criteria (>140/90 mm Hg) was significantly higher among social class 1 and 2 and showed positive relation with SES in both sexes. Among social class 1 and 2 subjects, there was a higher prevalence of overweight and obesity and sedentary lifestyle. Logistic regression analysis with adjustment of age showed that SES had a positive relation with hypertension (odds ratio: men 1.09, 95% CI 1.05-1.14; women 1.08, 95% CI 1.05-1.13), body mass index (odds ratio: men 1.12, 1.08-1.18; women 1.11, 1.06-1.16) and sedentary lifestyle (odds ratio: men 1.45, 1.32-1.58; women 1.38, 1.26-1.49). Only weak but significant associations were observed with smoking, alcohol and salt intake. The association of hypertension with social class was reduced after adjustment of body mass index, sedentary lifestyle, smoking and salt intake (odds ratio: men 0.96, 0.81-1.14; women 0.73, 0.54-1.04). There was an increase in the prevalence of hypertension and age-specific blood pressure (BP) with increasing age in both sexes. The overall prevalence of hypertension by WHO criteria (>160/95) was 4.6% and by JNC V criteria 20.8%, and the rates were comparable in both sexes. Social class 1 and 2 subjects in rural North India have a higher prevalence of hypertension and its risk factors of overweight and sedentary lifestyle.
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