Adriano Marçal Pimenta
Federal University of Minas Gerais, Brazil
Title: Night-shift work is associated with cardiovascular risk among employees of a public university in Brazil
Biography
Biography: Adriano Marçal Pimenta
Abstract
Cardiovascular diseases represent a significant public health problem and are responsible for one-third of all deaths in worldwide. Night-shift work has become common around the world, with approximately 22% of the population of industrialized countries performing their work activities during this period. We conducted a cross-sectional study with 211 workers of both genders, aged between 30 and 64 years, working on the health campus of a public university in the state of Minas Gerais, Brazil. The aim was to estimate the association between night-shift work and high cardiovascular risk. Night-shift work was defined as a work shift between 7 pm and 7 am, and high cardiovascular risk was calculated based on the Framingham score. The association between night-shift work and high cardiovascular risk was estimated by the prevalence ratio (PR) and its 95% confidence interval (95% CI) after adjusting for potential confounding factors, calculated by Poisson regression. Night-shift work was performed by 38.4% of the individuals, and high cardiovascular risk was diagnosed in 28% of the sample. In the bivariate analysis, night-shift work, passive and high job strain categories at the demand-control scale, work time > 120 months, schooling > 9 years, family income > 6 minimum wages, level 2 abdominal obesity, and triglyceride levels > 150 mg/dL were associated with high cardiovascular risk. After multivariate analysis, night-shift work remained independently associated with high cardiovascular risk (PR = 1.67; 95% CI = 1.10-2.54). This association should be considered when discussing the promotion of workers' health regarding changes in the work process.