Obesity and risk of job disability in male firefighters

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Abstract

Background

Obesity is a major public health problem and a workplace epidemic in Western societies. However, little is known about the association between obesity and job disability in specific occupational groups.

Aim

To examine the association between obesity and risk of job disability among firefighters.

Methods

A prospective cohort study design was employed in following 358 Massachusetts firefighters enrolled in a statewide medical surveillance program. We prospectively evaluated time to development of adverse employment outcomes >6 years of follow-up.

Results

In multivariable-adjusted Cox proportional hazard models, we found that every one-unit increase in body mass index (BMI) was associated with a 5% increased risk of job disability. Compared to firefighters in the lowest tertile of BMI (BMI < 27.2), those in the highest tertile (BMI ≥ 30.2) had a significantly increased risk of an adverse employment event with a multivariable-adjusted hazard ratio (HR) of 1.98 (95% CI 1.06–3.72). There was also a significant dose–response relationship of increasing risk across tertiles, as well as a significant trend: HR 1.39 (95% CI 1.04–1.86). The highest categories of BMI had a 60–90% increased risk of job disability compared to the lowest or normal-weight categories, respectively.

Conclusions

Obesity is associated with higher risk of job disability in firefighters. Additional research is needed to further explore our findings. Our study may have economic and public health implications in other occupational settings.

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