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Separate and Joint Associations of Shift Work and Sleep Quality with Lipids
Luenda E Charles,Ja K. Gu,Cathy A. Tinney-Zara,Desta Fekedulegn,Claudia C. Ma,Penelope Baughman,Tara A. Hartley,Michael E. Andrew,John M. Violanti,Cecil M. Burchfiel 한국산업안전보건공단 산업안전보건연구원 2016 Safety and health at work Vol.7 No.2
Background: Shift work and/or sleep quality may affect health. We investigated whether shift work and sleep quality, separately and jointly, were associated with abnormal levels of triglycerides, total cholesterol (TC), and low-and high-density lipoprotein cholesterol in 360 police officers (27.5% women). Methods: Triglycerides, TC, and high-density lipoprotein were analyzed on the Abbott Architect; lowdensity lipoprotein was calculated. Shift work was assessed using City of Buffalo payroll work history records. Sleep quality (good, < 5; intermediate, 6e8; poor, > 9) was assessed using the Pittsburgh Sleep Quality Index questionnaire. A shift work þ sleep quality variable was created: day plus good sleep; day plus poor sleep; afternoon/night plus good; and poor sleep quality. Mean values of lipid biomarkers were compared across categories of the exposures using analysis of variance/analysis of covariance. Results: Shift work was not significantly associated with lipids. However, as sleep quality worsened, mean levels of triglycerides and TC gradually increased but only among female officers (age- and raceadjusted p = 0.013 and 0.030, respectively). Age significantly modified the association between sleep quality and TC. Among officers > 40 years old, those reporting poor sleep quality had a significantly higher mean level of TC (202.9 ± 3.7 mg/dL) compared with those reporting good sleep quality (190.6 ± 4.0 mg/dL) (gender- and race-adjusted p = 0.010). Female officers who worked the day shift and also reported good sleep quality had the lowest mean level of TC compared with women in the other three categories (p = 0.014). Conclusion: Sleep quality and its combined influence with shift work may play a role in the alteration of some lipid measures.
Separate and Joint Associations of Shift Work and Sleep Quality with Lipids
Charles, Luenda E.,Gu, Ja K.,Tinney-Zara, Cathy A.,Fekedulegn, Desta,Ma, Claudia C.,Baughman, Penelope,Hartley, Tara A.,Andrew, Michael E.,Violanti, John M.,Burchfiel, Cecil M. Occupational Safety and Health Research Institute 2016 Safety and health at work Vol.7 No.2
Background: Shift work and/or sleep quality may affect health. We investigated whether shift work and sleep quality, separately and jointly, were associated with abnormal levels of triglycerides, total cholesterol (TC), and low-and high-density lipoprotein cholesterol in 360 police officers (27.5% women). Methods: Triglycerides, TC, and high-density lipoprotein were analyzed on the Abbott Architect; low-density lipoprotein was calculated. Shift work was assessed using City of Buffalo payroll work history records. Sleep quality (good, ${\leq}5$; intermediate, 6-8; poor, ${\geq}9$) was assessed using the Pittsburgh Sleep Quality Index questionnaire. A shift work + sleep quality variable was created: day plus good sleep; day plus poor sleep; afternoon/night plus good; and poor sleep quality. Mean values of lipid biomarkers were compared across categories of the exposures using analysis of variance/analysis of covariance. Results: Shift work was not significantly associated with lipids. However, as sleep quality worsened, mean levels of triglycerides and TC gradually increased but only among female officers (age- and race-adjusted p = 0.013 and 0.030, respectively). Age significantly modified the association between sleep quality and TC. Among officers ${\geq}40$ years old, those reporting poor sleep quality had a significantly higher mean level of TC ($202.9{\pm}3.7mg/dL$) compared with those reporting good sleep quality ($190.6{\pm}4.0mg/dL$) (gender- and race-adjusted p = 0.010). Female officers who worked the day shift and also reported good sleep quality had the lowest mean level of TC compared with women in the other three categories (p = 0.014). Conclusion: Sleep quality and its combined influence with shift work may play a role in the alteration of some lipid measures.