Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study

OBJECTIVES: Short time between consecutive work shifts (quick returns, ie, ≤11 hours between shifts) is associated with sleepiness and fatigue, both of which have been linked to risk of injury. This paper aims to study quick returns between work shifts and risk of injury among Danish hospital worker...

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Main Authors: Helena B Nielsen, Åse Marie Hansen, Sadie H Conway, Johnny Dyreborg, Johnni Hansen, Henrik A Kolstad, Ann Dyreborg Larsen, Kirsten Nabe-Nielsen, Lisa A Pompeii, Anne Helene Garde
Format: Article
Language:English
Published: Nordic Association of Occupational Safety and Health (NOROSH) 2019-03-01
Series:Scandinavian Journal of Work, Environment & Health
Subjects:
Online Access: https://www.sjweh.fi/show_abstract.php?abstract_id=3770
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author Helena B Nielsen
Åse Marie Hansen
Sadie H Conway
Johnny Dyreborg
Johnni Hansen
Henrik A Kolstad
Ann Dyreborg Larsen
Kirsten Nabe-Nielsen
Lisa A Pompeii
Anne Helene Garde
author_facet Helena B Nielsen
Åse Marie Hansen
Sadie H Conway
Johnny Dyreborg
Johnni Hansen
Henrik A Kolstad
Ann Dyreborg Larsen
Kirsten Nabe-Nielsen
Lisa A Pompeii
Anne Helene Garde
author_sort Helena B Nielsen
collection DOAJ
description OBJECTIVES: Short time between consecutive work shifts (quick returns, ie, ≤11 hours between shifts) is associated with sleepiness and fatigue, both of which have been linked to risk of injury. This paper aims to study quick returns between work shifts and risk of injury among Danish hospital workers. METHOD: The study population included 69 200 employees, primarily working at hospitals, corresponding to 167 726 person years at risk between 2008–2015. Information on working hours was obtained from payroll data in the Danish Working Hour Database and linked, at an individual level, with data on 11 834 injury records identified in the National Patient Register and the Danish Register of Causes of Death. Multivariate Poisson regression models were used to calculate incidence rate ratios (IRR) with 95% confidence intervals (CI). RESULTS: Results showed the shorter the time between shifts, the higher the risk of injury. Thus, an elevated risk of injury was observed after quick returns compared with the standard 15–17 hours between shifts (IRR 1.39, 95% CI 1.23–1.58). Furthermore, when assessing the number of days since a quick return, the risk of injury was especially high within the first two days (day 1: IRR 1.39, 95% CI 1.23–1.58; day 2: IRR 1.39, 95% CI 1.21–1.58) following a quick return. CONCLUSIONS: Our results suggest that quick returns increased the risk of injury, in particular within the first two days following a quick return. These findings point towards avoiding or reducing the number of quick returns in order to lower employees’ risk of injury.
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spelling doaj.art-d51dc7926b634217b11497c255c7f0e32022-12-21T22:46:07ZengNordic Association of Occupational Safety and Health (NOROSH)Scandinavian Journal of Work, Environment & Health0355-31401795-990X2019-03-0145216617310.5271/sjweh.37703770Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort studyHelena B Nielsen0Åse Marie HansenSadie H ConwayJohnny DyreborgJohnni HansenHenrik A KolstadAnn Dyreborg LarsenKirsten Nabe-NielsenLisa A PompeiiAnne Helene GardeNational Research Centre for the Working Environment, Lersø Parkallé 105, 2100 Copenhagen Ø, Denmark.OBJECTIVES: Short time between consecutive work shifts (quick returns, ie, ≤11 hours between shifts) is associated with sleepiness and fatigue, both of which have been linked to risk of injury. This paper aims to study quick returns between work shifts and risk of injury among Danish hospital workers. METHOD: The study population included 69 200 employees, primarily working at hospitals, corresponding to 167 726 person years at risk between 2008–2015. Information on working hours was obtained from payroll data in the Danish Working Hour Database and linked, at an individual level, with data on 11 834 injury records identified in the National Patient Register and the Danish Register of Causes of Death. Multivariate Poisson regression models were used to calculate incidence rate ratios (IRR) with 95% confidence intervals (CI). RESULTS: Results showed the shorter the time between shifts, the higher the risk of injury. Thus, an elevated risk of injury was observed after quick returns compared with the standard 15–17 hours between shifts (IRR 1.39, 95% CI 1.23–1.58). Furthermore, when assessing the number of days since a quick return, the risk of injury was especially high within the first two days (day 1: IRR 1.39, 95% CI 1.23–1.58; day 2: IRR 1.39, 95% CI 1.21–1.58) following a quick return. CONCLUSIONS: Our results suggest that quick returns increased the risk of injury, in particular within the first two days following a quick return. These findings point towards avoiding or reducing the number of quick returns in order to lower employees’ risk of injury. https://www.sjweh.fi/show_abstract.php?abstract_id=3770 compressed work weekchange-overbreakcohort studyshift workdenmarkshift workerhospital workershiftrestpayroll dataregister-based cohort studyshort work shift intervalshort intervalquick return
spellingShingle Helena B Nielsen
Åse Marie Hansen
Sadie H Conway
Johnny Dyreborg
Johnni Hansen
Henrik A Kolstad
Ann Dyreborg Larsen
Kirsten Nabe-Nielsen
Lisa A Pompeii
Anne Helene Garde
Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study
Scandinavian Journal of Work, Environment & Health
compressed work week
change-over
break
cohort study
shift work
denmark
shift worker
hospital worker
shift
rest
payroll data
register-based cohort study
short work shift interval
short interval
quick return
title Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study
title_full Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study
title_fullStr Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study
title_full_unstemmed Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study
title_short Short time between shifts and risk of injury among Danish hospital workers: a register-based cohort study
title_sort short time between shifts and risk of injury among danish hospital workers a register based cohort study
topic compressed work week
change-over
break
cohort study
shift work
denmark
shift worker
hospital worker
shift
rest
payroll data
register-based cohort study
short work shift interval
short interval
quick return
url https://www.sjweh.fi/show_abstract.php?abstract_id=3770
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