Relationship of work schedules to gastrointestinal diagnoses, symptoms, and medication use in auto factory workers

Abstract

BACKGROUND: Gastrointestinal (GI) complaints are common in shift workers. This study examines the relationship between work schedules and GI symptoms, medications, and diagnoses. METHODS: In a cross-sectional survey of 343 US auto factory workers, four work schedule variables were examined: assigned shift, number of hours worked, number of night hours, and schedule variability. Multiple regression tested the relationship between GI outcomes and work schedule variables while controlling for covariates. RESULTS: The evening shift was associated with more GI symptoms and GI diagnoses. Unexpectedly, more consistent work times were associated with having a GI diagnosis. As schedule variability increased the probability of GI medication use increased in low noise exposure. CONCLUSION: Findings suggest that evening shift and widely varying work start and end times may increase risks for GI disturbances.

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