Long working hours and risk of hypothyroidism in healthy workers: A cohort study.

ABSTRACT:

Objectives

Long working hours have been reported to cause various health problems. However, long working hours are currently practiced in many countries. To confirm the consistency with a previous study, the authors aimed to elucidate the causal relationship between long working hours and hypothyroidism through a longitudinal study.

Methods

Data was collected at baseline from 45,259 participants without thyroid disease and with no change in groups of weekly working hours, which were categorized into 36-40, 41-52, 53-60, and >60 hours, during follow-up period. Hypothyroidism was defined using the reference limits of serum thyroid-stimulating hormone and free thyroxine levels. By estimating hazard ratios (HRs) and 95% confidence intervals (CIs) using Cox proportional hazards r

SUBMITTER: Lee Y 

PROVIDER: S-EPMC10106547 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature