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Impact of Decreased Night Work on Workers’ Musculoskeletal Symptoms: A Quasi-Experimental Intervention Study

Author

Listed:
  • Hye-Eun Lee

    (Korea Institute of Labor Safety and Health, Seoul 07023, Korea
    Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA)

  • Min Choi

    (Korea Institute of Labor Safety and Health, Seoul 07023, Korea)

  • Hyoung-Ryoul Kim

    (Department of Occupational and Environmental Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea)

  • Ichiro Kawachi

    (Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA)

Abstract

A possible association between night shift work and musculoskeletal disorder has been suggested. This study aimed to evaluate the impact of decreased night work on musculoskeletal pain. Difference-in-difference estimation was used to compare changes in musculoskeletal pain between shift workers ( N = 122) and non-shift workers ( N = 170) in a manufacturing company before and after the introduction of a new shift system eliminating overnight work. Musculoskeletal pain was measured by a questionnaire asking if workers had symptoms in specific body parts, including the neck, shoulder, arm/elbow, wrist/hand, back, and leg/foot, over the past year. Generalized estimating equation models were used to estimate changes in pre- versus post-intervention musculoskeletal pain rates between the treated and control group. In the difference-in-difference (DID) models, prevalence of musculoskeletal pain for shoulder (−10.3%), arm (−12.9%), all sites combined (−9.2%), and upper extremity combined (−14.8%) showed significant decreases from pre- to post-intervention among the treated group (shift workers) compared to the control group (non-shift workers) after controlling for age and weekly working hours. Decreasing night work was related to improvement in musculoskeletal pain in shift workers.

Suggested Citation

  • Hye-Eun Lee & Min Choi & Hyoung-Ryoul Kim & Ichiro Kawachi, 2020. "Impact of Decreased Night Work on Workers’ Musculoskeletal Symptoms: A Quasi-Experimental Intervention Study," IJERPH, MDPI, vol. 17(23), pages 1-9, December.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:23:p:9092-:d:457398
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    Cited by:

    1. Ho-Ming Chen & Po-Yao Huang & Hung-Yi Chuang & Chao-Ling Wang & Chen-Cheng Yang & Peng-Ju Huang & Chi-Kung Ho, 2023. "Association of Low Back Pain with Shift Work: A Meta-Analysis," IJERPH, MDPI, vol. 20(2), pages 1-20, January.

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