Long work hours is associated with suboptimal glycemic control among US workers with diabetes

Evelyn P. Davila, Hermes Florez, Mary Jo Trepka, Lora E Fleming, Theophile Niyonsenga, David J. Lee, Jai Parkash

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Background: Increasing numbers of US workers are diabetic. We assessed the relationship between glycemic control and work hours and type of occupation among employed US adults with type 2 diabetes. Methods: Data were obtained from the 1999-2004 National Health and Nutrition Examination Survey (NHANES). A representative sample of employed US adults ≥20 years with self-reported type 2 diabetes (n=369) was used. Two dichotomous glycemic control indicators, based on various HbA1c level cut-points, were used as dependent variables in weighted logistic regression analyses with adjustment for confounders. Results: Adults working over 40hr/week were more likely to have suboptimal glycemic control (HbA1c≥7%) compared to those working 20hr or less (odds ratio=5.09; 95% confidence interval: [1.38-18.76]). Conclusions: Work-related factors, such as number of hours worked, may affect the ability of adults with type 2 diabetes to reach and maintain glycemic control goals. These factors should be considered in the development of workplace policies and accommodations for the increasing number of workers with type 2 diabetes.

Original languageEnglish (US)
Pages (from-to)375-383
Number of pages9
JournalAmerican Journal of Industrial Medicine
Issue number5
StatePublished - May 1 2011


  • Hemoglobin A1C
  • NHANES survey data
  • Suboptimal and poor glycemic control
  • Type 2 diabetes workers
  • Type of occupation
  • Work hours

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health


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