Taiji Noguchi1, Ryozo Wakabayashi2, Takeshi Nishiyama2, Takahiro Otani2, Hiroko Nakagawa-Senda2, Miki Watanabe2, Akihiro Hosono3, Kiyoshi Shibata4, Hiroyuki Kamishima5, Akane Nogimura6, Kenji Nagaya2, Tamaki Yamada7, Sadao Suzuki8. 1. Department of Social Science, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Aichi, Japan; Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan. 2. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan. 3. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan; Atsuta Public Health Center, City of Nagoya, Aichi, Japan. 4. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan; Department of Health and Nutritional Sciences, Nagoya Keizai University, Aichi, Japan. 5. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan; Department of Home Economics, Aichi Gakusen University, Aichi, Japan. 6. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan; Department of Anesthesiology and Intensive Care Medicine, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan. 7. Okazaki Public Health Center, Okazaki Medical Association, Aichi, Japan. 8. Department of Public Health, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan. Electronic address: sdsuzuki@med.nagoya-cu.ac.jp.
Abstract
OBJECTIVES: The number of older adults who continue working after retirement is increasing in Japan. Little is known about how job conditions affect older adults' health. We examined the association between job conditions and health-related quality of life (HRQOL) during a five-year follow-up study. METHODS: This study included participants aged 65 years or older from the Japan Multi-Institutional Collaborative Cohort Study in the Okazaki area recruited at baseline between 2007 and 2011 and followed up five years later. Participants completed a self-reported questionnaire on the physical and mental health aspects of HRQOL (SF-8™), employment status, and job conditions (job satisfaction, skill use, and job suitability). RESULTS: Data of 1,146 men and 522 women were analyzed (mean age: 69.1 and 68.6 years, respectively). Generalized mixed linear regression analysis revealed that, compared to the not-working group, skill use was positively associated with mental health aspects among men (skill use × time: β = 0.16, SE = 0.08, p < 0.05), while poor job satisfaction and job suitability were negatively associated with mental health aspects among women (job satisfaction, not satisfied × time: β = -0.93, SE = 0.47, p < 0.05; job suitability, not suitable × time: β = -1.06, SE = 0.50, p < 0.05). CONCLUSIONS: Regarding job conditions among older adults, skill use in men was marginally associated with mental health, and poor job satisfaction and suitability in women were negatively associated with mental health. Considering the job conditions of older workers is necessary to protect their mental health.
OBJECTIVES: The number of older adults who continue working after retirement is increasing in Japan. Little is known about how job conditions affect older adults' health. We examined the association between job conditions and health-related quality of life (HRQOL) during a five-year follow-up study. METHODS: This study included participants aged 65 years or older from the Japan Multi-Institutional Collaborative Cohort Study in the Okazaki area recruited at baseline between 2007 and 2011 and followed up five years later. Participants completed a self-reported questionnaire on the physical and mental health aspects of HRQOL (SF-8™), employment status, and job conditions (job satisfaction, skill use, and job suitability). RESULTS: Data of 1,146 men and 522 women were analyzed (mean age: 69.1 and 68.6 years, respectively). Generalized mixed linear regression analysis revealed that, compared to the not-working group, skill use was positively associated with mental health aspects among men (skill use × time: β = 0.16, SE = 0.08, p < 0.05), while poor job satisfaction and job suitability were negatively associated with mental health aspects among women (job satisfaction, not satisfied × time: β = -0.93, SE = 0.47, p < 0.05; job suitability, not suitable × time: β = -1.06, SE = 0.50, p < 0.05). CONCLUSIONS: Regarding job conditions among older adults, skill use in men was marginally associated with mental health, and poor job satisfaction and suitability in women were negatively associated with mental health. Considering the job conditions of older workers is necessary to protect their mental health.