Objective To analyze the relationship between high temperature exposure years and prevalence of hypertension in male steel workers using restrictive cubic spline model.
Method Male steel workers who accepted occupational health examination from September 2014 to October 2015 were investigated by self-designed questionnaire and anthropometric measurement. The relationship between years of exposure to high temperature and prevalence of hypertension were analyzed using logistic regression model and restricted cubic spline model.
Result The prevalence rate of hypertension was 29.6%. After adjusting for age, seniority, educational level, average family income per month, family history, body mass index, physical exercise, salt intake, and noise exposure, according to logistic regression analysis, high temperature exposure in the past (OR=1.67, 95%CI: 1.47-1.90) and at present (OR=1.52, 95%CI: 1.15-1.99) was associated with the prevalence of hypertension in the steel workers. The results of restricted cubic spline model showed a linear relationship between years of exposure to high temperature and hypertension (nonlinear test, P=0.918 8).
Conclusion The findings suggest a linear relationship between high temperature exposure years and prevalence of hypertension in the male steel workers.
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