The Associations Between Shift Work Exposure and Selected Health Outcomes Among Middle-Aged and Older Adults, Results from the Canadian Longitudinal Study on Aging

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dc.contributor.advisorTamim, Hala
dc.contributor.authorKhan, Durdana
dc.date.accessioned2023-12-08T14:25:49Z
dc.date.available2023-12-08T14:25:49Z
dc.date.issued2023-12-08
dc.date.updated2023-12-08T14:25:49Z
dc.degree.disciplineKinesiology & Health Science
dc.degree.levelDoctoral
dc.degree.namePhD - Doctor of Philosophy
dc.description.abstractWe live in a globalized 24-hour society, consuming services, products and entertainment around the clock. As a result, more and more people are working in shifts. Currently, one in every four Canadians is working in shifts other than regular daytime hours. At the same time, the working population is aging and are becoming more common in most developed nations, including Canada. Together with physiological and epidemiological data on the alarming relationships between shift work and various physical, social and mental health outcomes, there is reason to believe that shift work may become a major occupational health problem in the near future. This dissertation analyzed data from the Canadian Longitudinal Study on Aging (CLSA) and investigated the associations between shift work and three specific outcomes related to health of middle-aged and older adults, specifically variations in age at natural menopause, frailty and cognitive impairment. The primary exposure, shift work, was measured using three derived variables: ever exposed to shift work, shift work exposure in current job, and shift work exposure in longest job. Multivariable analysis revealed that exposure to shift work is significantly related to adverse health outcomes among middle-aged and older adults. These findings highlight how shift work affects the health of the aging labor force. It also serves as a reminder of the importance of taking modifiable risk factors like shift work into account when developing and implementing health interventions in old age. It is believed that shift work, through circadian misalignment and melatonin suppression, interfere with human homeostasis and wellbeing, however, further research is needed to confirm this.
dc.identifier.urihttps://hdl.handle.net/10315/41621
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectPublic health
dc.subjectEpidemiology
dc.subjectOccupational health
dc.subject.keywordsHealth
dc.subject.keywordsEpidemiology
dc.subject.keywordsOccupational epidemiology
dc.subject.keywordsEnvironmental health
dc.subject.keywordsOccupational health
dc.subject.keywordsWorker's health
dc.subject.keywordsShift work
dc.subject.keywordsNight shift work
dc.subject.keywordsRotating shift work
dc.subject.keywordsCanadian Longitudinal Study on Aging (CLSA)
dc.subject.keywordsAge at natural menopause
dc.subject.keywordsFrailty
dc.subject.keywordsCognition
dc.subject.keywordsCircadian disruption
dc.subject.keywordsCanada
dc.subject.keywordsLongitudinal data
dc.titleThe Associations Between Shift Work Exposure and Selected Health Outcomes Among Middle-Aged and Older Adults, Results from the Canadian Longitudinal Study on Aging
dc.typeElectronic Thesis or Dissertation

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