Cargando…
Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees
BACKGROUND: Previous studies of preterm birth (PTB) concerning night work have been inconclusive and partly limited by imprecise data on working schedules. This study investigated the risk of PTB in relation to detailed, registry-based data on working hours. METHODS: In a register-based prospective...
Autores principales: | , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8743126/ https://www.ncbi.nlm.nih.gov/pubmed/34999871 http://dx.doi.org/10.1093/ije/dyab135 |
_version_ | 1784629842950488064 |
---|---|
author | Kader, Manzur Bigert, Carolina Andersson, Tomas Selander, Jenny Bodin, Theo Skröder, Helena Härmä, Mikko Albin, Maria Gustavsson, Per |
author_facet | Kader, Manzur Bigert, Carolina Andersson, Tomas Selander, Jenny Bodin, Theo Skröder, Helena Härmä, Mikko Albin, Maria Gustavsson, Per |
author_sort | Kader, Manzur |
collection | PubMed |
description | BACKGROUND: Previous studies of preterm birth (PTB) concerning night work have been inconclusive and partly limited by imprecise data on working schedules. This study investigated the risk of PTB in relation to detailed, registry-based data on working hours. METHODS: In a register-based prospective cohort study, we identified 4970 singleton births with information on PTB from the Swedish Medical Birth Register of health care employees in Stockholm. Day-by-day information on working hours 2008–16 was obtained from a computerized employee register. Odds ratios (ORs) of PTB according to work hour characteristics were analysed by logistic regression adjusted for mother’s age, stature, body mass index (BMI), parity, smoking habits, education, profession and country of birth. RESULTS: There was an increased risk of PTB among those who frequently worked night shifts (>25 times) [OR, 1.62; 95% confidence interval (CI), 1.03–2.53] and who ever worked ≥3 consecutive night shifts (OR, 1.43; 95% CI, 1.03–1.99) during the first trimester. Frequently (> 8 times) working 3 or more consecutive nights, and frequently (>18 times) having quick returns from night shifts (<28 h) during the first trimester showed 3–4 fold increased risk of PTB. Moreover, working frequent (>20 times) long shifts (≥10 h) (OR 1.63; 95% CI, 1.07–2.49) during the first trimester and working any Week >40 h (OR 2.05; 95% CI, 1.31–3.22) during the third trimester were associated with PTB. CONCLUSIONS: In this cohort of Swedish health care employees with registry-based data on working hours, night work, especially working frequent consecutive nights, and quick returns from night shifts during the first trimester were associated with increased risk of PTB among pregnant women. |
format | Online Article Text |
id | pubmed-8743126 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-87431262022-01-11 Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees Kader, Manzur Bigert, Carolina Andersson, Tomas Selander, Jenny Bodin, Theo Skröder, Helena Härmä, Mikko Albin, Maria Gustavsson, Per Int J Epidemiol Risks for Pretem Birth BACKGROUND: Previous studies of preterm birth (PTB) concerning night work have been inconclusive and partly limited by imprecise data on working schedules. This study investigated the risk of PTB in relation to detailed, registry-based data on working hours. METHODS: In a register-based prospective cohort study, we identified 4970 singleton births with information on PTB from the Swedish Medical Birth Register of health care employees in Stockholm. Day-by-day information on working hours 2008–16 was obtained from a computerized employee register. Odds ratios (ORs) of PTB according to work hour characteristics were analysed by logistic regression adjusted for mother’s age, stature, body mass index (BMI), parity, smoking habits, education, profession and country of birth. RESULTS: There was an increased risk of PTB among those who frequently worked night shifts (>25 times) [OR, 1.62; 95% confidence interval (CI), 1.03–2.53] and who ever worked ≥3 consecutive night shifts (OR, 1.43; 95% CI, 1.03–1.99) during the first trimester. Frequently (> 8 times) working 3 or more consecutive nights, and frequently (>18 times) having quick returns from night shifts (<28 h) during the first trimester showed 3–4 fold increased risk of PTB. Moreover, working frequent (>20 times) long shifts (≥10 h) (OR 1.63; 95% CI, 1.07–2.49) during the first trimester and working any Week >40 h (OR 2.05; 95% CI, 1.31–3.22) during the third trimester were associated with PTB. CONCLUSIONS: In this cohort of Swedish health care employees with registry-based data on working hours, night work, especially working frequent consecutive nights, and quick returns from night shifts during the first trimester were associated with increased risk of PTB among pregnant women. Oxford University Press 2021-07-01 /pmc/articles/PMC8743126/ /pubmed/34999871 http://dx.doi.org/10.1093/ije/dyab135 Text en © The Author(s) 2021. Published by Oxford University Press on behalf of the International Epidemiological Association. https://creativecommons.org/licenses/by/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Risks for Pretem Birth Kader, Manzur Bigert, Carolina Andersson, Tomas Selander, Jenny Bodin, Theo Skröder, Helena Härmä, Mikko Albin, Maria Gustavsson, Per Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees |
title | Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees |
title_full | Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees |
title_fullStr | Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees |
title_full_unstemmed | Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees |
title_short | Shift and night work during pregnancy and preterm birth—a cohort study of Swedish health care employees |
title_sort | shift and night work during pregnancy and preterm birth—a cohort study of swedish health care employees |
topic | Risks for Pretem Birth |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8743126/ https://www.ncbi.nlm.nih.gov/pubmed/34999871 http://dx.doi.org/10.1093/ije/dyab135 |
work_keys_str_mv | AT kadermanzur shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT bigertcarolina shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT anderssontomas shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT selanderjenny shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT bodintheo shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT skroderhelena shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT harmamikko shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT albinmaria shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees AT gustavssonper shiftandnightworkduringpregnancyandpretermbirthacohortstudyofswedishhealthcareemployees |