Night work and hypertensive disorders of pregnancy: a national register-based cohort study

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Night work and hypertensive disorders of pregnancy : a national register-based cohort study. / Hammer, Paula; Flachs, Esben; Specht, Ina; Pinborg, Anja; Petersen, Sesilje; Larsen, Ann; Hougaard, Karin; Hansen, Johnni; Hansen, Åse; Kolstad, Henrik; Garde, Anne; Bonde, Jens Peter.

In: Scandinavian Journal of Work, Environment & Health, Vol. 44, No. 4, 2018, p. 403-413.

Research output: Contribution to journalJournal articleResearchpeer-review

Harvard

Hammer, P, Flachs, E, Specht, I, Pinborg, A, Petersen, S, Larsen, A, Hougaard, K, Hansen, J, Hansen, Å, Kolstad, H, Garde, A & Bonde, JP 2018, 'Night work and hypertensive disorders of pregnancy: a national register-based cohort study', Scandinavian Journal of Work, Environment & Health, vol. 44, no. 4, pp. 403-413. https://doi.org/10.5271/sjweh.3728

APA

Hammer, P., Flachs, E., Specht, I., Pinborg, A., Petersen, S., Larsen, A., ... Bonde, J. P. (2018). Night work and hypertensive disorders of pregnancy: a national register-based cohort study. Scandinavian Journal of Work, Environment & Health, 44(4), 403-413. https://doi.org/10.5271/sjweh.3728

Vancouver

Hammer P, Flachs E, Specht I, Pinborg A, Petersen S, Larsen A et al. Night work and hypertensive disorders of pregnancy: a national register-based cohort study. Scandinavian Journal of Work, Environment & Health. 2018;44(4):403-413. https://doi.org/10.5271/sjweh.3728

Author

Hammer, Paula ; Flachs, Esben ; Specht, Ina ; Pinborg, Anja ; Petersen, Sesilje ; Larsen, Ann ; Hougaard, Karin ; Hansen, Johnni ; Hansen, Åse ; Kolstad, Henrik ; Garde, Anne ; Bonde, Jens Peter. / Night work and hypertensive disorders of pregnancy : a national register-based cohort study. In: Scandinavian Journal of Work, Environment & Health. 2018 ; Vol. 44, No. 4. pp. 403-413.

Bibtex

@article{2745c63e9abd40a0983c8ddb4f73ab70,
title = "Night work and hypertensive disorders of pregnancy: a national register-based cohort study",
abstract = "Objective The aim of this study was to investigate whether night work expressed by number and duration of night shifts, number of consecutive night shifts, and number of quick returns during the first 20 weeks of pregnancy is a risk factor for hypertensive disorders of pregnancy (HDP). Methods The study population comprised Danish workers in public administration and hospitals who gave birth between 2007 and 2013. Exposure was assessed objectively through payroll data. Information on the outcome was retrieved from the National Patient Register. We performed logistic regression on the risk for HDP according to night work adjusted for age, body mass index (BMI), parity, socioeconomic status, and sickness absence prior to pregnancy. Results Among 18 724 workers, 60{\%} had at least one night shift during the first 20 weeks of pregnancy. The prevalence of HDP was 3.7{\%}. Among night workers, the risk of HDP grew with increasing number of consecutive night shifts [odds ratio (OR) 1.41, 95{\%} confidence interval (CI) 1.01-1.98) and of quick returns after night shifts (OR 1.28, 95{\%} CI 0.87-1.95). Among obese women (body mass index ≥30 kg/m 2), those who worked long night shifts and longer spells of consecutive night shifts, and had the highest number of quick returns after night shifts, had a 4-5 fold increased risk of HDP compared to day workers. Conclusion Working consecutive night shifts and quick returns after night shifts during the first 20 pregnancy weeks was associated with an increased risk of HDP, particularly among obese women.",
author = "Paula Hammer and Esben Flachs and Ina Specht and Anja Pinborg and Sesilje Petersen and Ann Larsen and Karin Hougaard and Johnni Hansen and {\AA}se Hansen and Henrik Kolstad and Anne Garde and Bonde, {Jens Peter}",
year = "2018",
doi = "10.5271/sjweh.3728",
language = "English",
volume = "44",
pages = "403--413",
journal = "Scandinavian Journal of Work, Environment & Health",
issn = "0355-3140",
publisher = "Tyoterveyslaitos",
number = "4",

}

RIS

TY - JOUR

T1 - Night work and hypertensive disorders of pregnancy

T2 - a national register-based cohort study

AU - Hammer, Paula

AU - Flachs, Esben

AU - Specht, Ina

AU - Pinborg, Anja

AU - Petersen, Sesilje

AU - Larsen, Ann

AU - Hougaard, Karin

AU - Hansen, Johnni

AU - Hansen, Åse

AU - Kolstad, Henrik

AU - Garde, Anne

AU - Bonde, Jens Peter

PY - 2018

Y1 - 2018

N2 - Objective The aim of this study was to investigate whether night work expressed by number and duration of night shifts, number of consecutive night shifts, and number of quick returns during the first 20 weeks of pregnancy is a risk factor for hypertensive disorders of pregnancy (HDP). Methods The study population comprised Danish workers in public administration and hospitals who gave birth between 2007 and 2013. Exposure was assessed objectively through payroll data. Information on the outcome was retrieved from the National Patient Register. We performed logistic regression on the risk for HDP according to night work adjusted for age, body mass index (BMI), parity, socioeconomic status, and sickness absence prior to pregnancy. Results Among 18 724 workers, 60% had at least one night shift during the first 20 weeks of pregnancy. The prevalence of HDP was 3.7%. Among night workers, the risk of HDP grew with increasing number of consecutive night shifts [odds ratio (OR) 1.41, 95% confidence interval (CI) 1.01-1.98) and of quick returns after night shifts (OR 1.28, 95% CI 0.87-1.95). Among obese women (body mass index ≥30 kg/m 2), those who worked long night shifts and longer spells of consecutive night shifts, and had the highest number of quick returns after night shifts, had a 4-5 fold increased risk of HDP compared to day workers. Conclusion Working consecutive night shifts and quick returns after night shifts during the first 20 pregnancy weeks was associated with an increased risk of HDP, particularly among obese women.

AB - Objective The aim of this study was to investigate whether night work expressed by number and duration of night shifts, number of consecutive night shifts, and number of quick returns during the first 20 weeks of pregnancy is a risk factor for hypertensive disorders of pregnancy (HDP). Methods The study population comprised Danish workers in public administration and hospitals who gave birth between 2007 and 2013. Exposure was assessed objectively through payroll data. Information on the outcome was retrieved from the National Patient Register. We performed logistic regression on the risk for HDP according to night work adjusted for age, body mass index (BMI), parity, socioeconomic status, and sickness absence prior to pregnancy. Results Among 18 724 workers, 60% had at least one night shift during the first 20 weeks of pregnancy. The prevalence of HDP was 3.7%. Among night workers, the risk of HDP grew with increasing number of consecutive night shifts [odds ratio (OR) 1.41, 95% confidence interval (CI) 1.01-1.98) and of quick returns after night shifts (OR 1.28, 95% CI 0.87-1.95). Among obese women (body mass index ≥30 kg/m 2), those who worked long night shifts and longer spells of consecutive night shifts, and had the highest number of quick returns after night shifts, had a 4-5 fold increased risk of HDP compared to day workers. Conclusion Working consecutive night shifts and quick returns after night shifts during the first 20 pregnancy weeks was associated with an increased risk of HDP, particularly among obese women.

U2 - 10.5271/sjweh.3728

DO - 10.5271/sjweh.3728

M3 - Journal article

VL - 44

SP - 403

EP - 413

JO - Scandinavian Journal of Work, Environment & Health

JF - Scandinavian Journal of Work, Environment & Health

SN - 0355-3140

IS - 4

ER -

ID: 197726151