Association between night-shift work, sleep quality and health-related quality of life: a cross-sectional study among manufacturing workers in a middle-income setting

ObjectivesNight-shift work may adversely affect health. This study aimed to determine the impact of night-shift work on health-related quality of life (HRQoL), and to assess whether sleep quality was a mediating factor.DesignA cross-sectional study.Setting11 manufacturing factories in Malaysia.Parti...

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Bibliographic Details
Published in:BMJ open 2020-09, Vol.10 (9), p.e034455
Main Authors: Lim, Yin Cheng, Hoe, Victor C. W., Darus, Azlan, Bhoo-Pathy, Nirmala
Format: Article
Language:English
Subjects:
Adult
Aged
Cross-Sectional Studies
Ethnicity
Health surveys
Humans
Malaysia - epidemiology
Manufacturing
Mediation
Medical screening
Metabolic syndrome
Middle Aged
Occupational and Environmental Medicine
Quality of Life
Questionnaires
Schedules
Shift work
Shift Work Schedule
Sleep
Sleep deprivation
Surveys and Questionnaires
Well being
Work Schedule Tolerance
Workers
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Summary:ObjectivesNight-shift work may adversely affect health. This study aimed to determine the impact of night-shift work on health-related quality of life (HRQoL), and to assess whether sleep quality was a mediating factor.DesignA cross-sectional study.Setting11 manufacturing factories in Malaysia.Participants177 night-shift workers aged 40–65 years old were compared with 317 non-night-shift workers.Primary and secondary outcomesParticipants completed a self-administered questionnaire on socio-demographics and lifestyle factors, 12-item Short Form Health Survey V.2 (SF-12v2) and the Pittsburgh Sleep Quality Index (PSQI). The Baron and Kenny’s method, Sobel test and multiple mediation model with bootstrapping were applied to determine whether PSQI score or its components mediated the association between night-shift work and HRQoL.ResultsNight-shift work was associated with sleep impairment and HRQoL. Night-shift workers had significantly lower mean scores in all the eight SF-12 domains (p
ISSN:2044-6055
2044-6055
DOI:10.1136/bmjopen-2019-034455