Hypertension and economic activities in São Paulo, Brazil.

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Abstract
A study of the prevalence of hypertension was undertaken among workers in 10 subsectors of the economy in São Paulo, a major urban-industrial area of Brazil. Included in the study were 5500 subjects 15-65 years of age, employed in 57 randomly selected firms. Hypertension rates (DBP greater than or equal to 90 mm Hg) were higher among males up to 44 years of age. There was a decreasing gradient from mild to moderate and severe forms in all groups. Severity tended to increase with age in all groups. Black males showed higher rates than whites (29.2% vs 16.7%, p less than 0.05), the excess being partially accounted for by moderate and severe forms (40% vs 20%). Subjects who overworked showed a trend toward higher hypertension rates. Higher rates in four subsectors (metallurgy, finance, transport, and journalism), aside from the distribution of known risk factors and job selection, may reflect a variety of work-related stressors.

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