Yuri Kawabe1, Yasuyuki Nakamura2,3, Sayuri Kikuchi4, Yoshimi Suzukamo5, Yoshitaka Murakami6, Taichiro Tanaka7, Toru Takebayashi8, Akira Okayama9, Katsuyuki Miura10, Tomonori Okamura8, Shunichi Fukuhara11, Hirotsugu Ueshima10. 1. Cardiovascular Epidemiology, Kyoto Women's University, Kyoto, Japan. 2. Cardiovascular Epidemiology, Kyoto Women's University, Kyoto, Japan. nakamury@kyoto-wu.ac.jp. 3. Departments of Public Health, Shiga University of Medical Science, Otsu, Japan. nakamury@kyoto-wu.ac.jp. 4. Department of Community Network and Collaborative Medicine, Kyoto University Hospital, Kyoto, Japan. 5. Department of Physical Medicine and Rehabilitation, Tohoku University Graduate School of Medicine, Sendai, Japan. 6. Departments of Medical Statistics, Faculty of Medicine, Toho University, Tokyo, Japan. 7. Department of Environmental and Occupational Health, Faculty of Medicine, Toho University, Tokyo, Japan. 8. Department of Preventive Medicine and Public Health, School of Medicine, Keio University, Tokyo, Japan. 9. Research Center for Lifestyle-Related Diseases, Tokyo, Japan. 10. Departments of Public Health, Shiga University of Medical Science, Otsu, Japan. 11. Department of Epidemiology and Healthcare Research, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Abstract
PURPOSE: To examine the relation of work type with health-related quality of life (HRQoL) in healthy workers. METHODS: We cross-sectionally examined 4427 (3605 men and 822 women) healthy workers in Japan, aged 19-69 years. We assessed HRQoL based on scores for five scales of the SF-36. Multiple regression was applied to examine the relation of work type (nighttime, shift, day to night, and daytime) with the five HRQoL norm-based scores, lower scores of which indicate poorer health status, adjusted for confounding factors, including sleeping duration. RESULTS: Shiftwork was inversely related to role physical [regression estimate (β) = -2.12, 95 % confidence intervals (CI) -2.94, -1.30, P < 0.001], general health (β = -1.37, 95 % CI -2.01, -0.72, P < 0.001), role emotional (β = -1.24, 95% CI -1.98, -0.50, P < 0.001), and mental health (β = -1.31, 95% CI -2.01, -0.63, P < 0.001) independent of confounding factors, but not to vitality. Day-to-nighttime work was inversely related to all the five HRQoL subscales (Ps 0.012 to <0.001). CONCLUSION: Shiftwork was significantly inversely related to four out of the five HRQoL, except for vitality, and day-to-nighttime work was significantly inversely related to all five HRQoL, independent of demographic and lifestyle factors.
PURPOSE: To examine the relation of work type with health-related quality of life (HRQoL) in healthy workers. METHODS: We cross-sectionally examined 4427 (3605 men and 822 women) healthy workers in Japan, aged 19-69 years. We assessed HRQoL based on scores for five scales of the SF-36. Multiple regression was applied to examine the relation of work type (nighttime, shift, day to night, and daytime) with the five HRQoL norm-based scores, lower scores of which indicate poorer health status, adjusted for confounding factors, including sleeping duration. RESULTS: Shiftwork was inversely related to role physical [regression estimate (β) = -2.12, 95 % confidence intervals (CI) -2.94, -1.30, P < 0.001], general health (β = -1.37, 95 % CI -2.01, -0.72, P < 0.001), role emotional (β = -1.24, 95% CI -1.98, -0.50, P < 0.001), and mental health (β = -1.31, 95% CI -2.01, -0.63, P < 0.001) independent of confounding factors, but not to vitality. Day-to-nighttime work was inversely related to all the five HRQoL subscales (Ps 0.012 to <0.001). CONCLUSION: Shiftwork was significantly inversely related to four out of the five HRQoL, except for vitality, and day-to-nighttime work was significantly inversely related to all five HRQoL, independent of demographic and lifestyle factors.
Entities:
Keywords:
Health-related quality of life; SF-36; Shift work
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