Association between diastolic blood pressure and cumulative work time.
Diastolic blood pressure was viewed as a generic indicator of aging, and its association with cumulative work time was studied after controlling for age as a potential confounding factor. The study was conducted among production line workers at a Brazilian tannery in July 1993. The association between diastolic blood pressure and cumulative work time was verified by fitting a second-order linear regression model, where diastolic blood pressure was a function of worker's age and cumulative work time. By fitting the model, one can predict that, from the beginning of working life at the tannery, on average each 1-year period is associated with an increase of about 1. 5 mmHg in diastolic blood pressure. The fit obtained highlights a component directly associated with work as part of the rate of pressure increase in the study group. This component is twice as high as that directly associated with age.
Cordeiro
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Departamento de Saúde Pública, Universidade Estadual Paulista, C. P. 543, Botucatu, SP 18618-970, Brasil.
Lima Filho
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EC
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D003971:Diastole; D006801:Humans; D006973:Hypertension / Q000453:epidemiology; D016014:Linear Models; D008875:Middle Aged; D016272:Occupational Health; D012307:Risk Factors; D013997:Time Factors; D014937:Work