Night shift work and incidence of diabetes in the Danish Nurse Cohort
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Night shift work and incidence of diabetes in the Danish Nurse Cohort. / Hansen, Anne B.; Stayner, Leslie; Hansen, Johnni; Andersen, Zorana J.
I: Occupational and Environmental Medicine, Bind 73, Nr. 4, 04.2016, s. 262-268.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Night shift work and incidence of diabetes in the Danish Nurse Cohort
AU - Hansen, Anne B.
AU - Stayner, Leslie
AU - Hansen, Johnni
AU - Andersen, Zorana J.
N1 - Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/
PY - 2016/4
Y1 - 2016/4
N2 - OBJECTIVES: Night shift work has been associated with poor sleep, weight gain, metabolic syndrome, which are recognised risk factor for diabetes. However, only a few studies have examined the effect of shift work on diabetes risk. Here, we study the association between shift work and incidence of diabetes in Danish nurses.METHODS: We used the Danish Nurse Cohort with 28 731 participating female nurses recruited in 1993 (19 898) or 1999 (8833), when self-reported baseline information on diabetes prevalence, lifestyle and working time were collected, and followed them in the Danish Diabetes Register for incidence of diabetes until 2013. Nurses reported whether they worked night, evening, rotating or day shifts. We analysed the association between working time and diabetes incidence using a Cox proportional hazards model adjusted for diabetes risk factors, separately with and without adjustment for body mass index (BMI) which might be an intermediate variable.RESULTS: Of 19 873 nurses who worked and were diabetes-free at recruitment, 837 (4.4%) developed diabetes during 15 years of follow-up. The majority of nurses (62.4%) worked day shifts, 21.8% rotating shift, 10.1% evening and 5.5% night shifts. Compared with nurses who worked day shifts, we found statistically significantly increased risk of diabetes in nurses who worked night (1.58; 1.25 to 1.99) or evening shifts (1.29; 1.04 to 1.59) in the fully adjusted models including BMI.CONCLUSIONS: Danish nurses working night and evening shifts have increased risk for diabetes, with the highest risk associated with current night shift work.
AB - OBJECTIVES: Night shift work has been associated with poor sleep, weight gain, metabolic syndrome, which are recognised risk factor for diabetes. However, only a few studies have examined the effect of shift work on diabetes risk. Here, we study the association between shift work and incidence of diabetes in Danish nurses.METHODS: We used the Danish Nurse Cohort with 28 731 participating female nurses recruited in 1993 (19 898) or 1999 (8833), when self-reported baseline information on diabetes prevalence, lifestyle and working time were collected, and followed them in the Danish Diabetes Register for incidence of diabetes until 2013. Nurses reported whether they worked night, evening, rotating or day shifts. We analysed the association between working time and diabetes incidence using a Cox proportional hazards model adjusted for diabetes risk factors, separately with and without adjustment for body mass index (BMI) which might be an intermediate variable.RESULTS: Of 19 873 nurses who worked and were diabetes-free at recruitment, 837 (4.4%) developed diabetes during 15 years of follow-up. The majority of nurses (62.4%) worked day shifts, 21.8% rotating shift, 10.1% evening and 5.5% night shifts. Compared with nurses who worked day shifts, we found statistically significantly increased risk of diabetes in nurses who worked night (1.58; 1.25 to 1.99) or evening shifts (1.29; 1.04 to 1.59) in the fully adjusted models including BMI.CONCLUSIONS: Danish nurses working night and evening shifts have increased risk for diabetes, with the highest risk associated with current night shift work.
U2 - 10.1136/oemed-2015-103342
DO - 10.1136/oemed-2015-103342
M3 - Journal article
C2 - 26889020
VL - 73
SP - 262
EP - 268
JO - Occupational and Environmental Medicine
JF - Occupational and Environmental Medicine
SN - 1351-0711
IS - 4
ER -
ID: 156968936