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APHA Scientific Session and Event Listing

Chiyoe Murata, PhD, MPH¹, Hiroshi Yatsuya, PhD, MD², Koji Tamakoshi, PhD, MD², Rei Otsuka, MS², and Hideaki Toyoshima, PhD, MD². (1) Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu-shi, 431-3192, Japan, 81-53-435-2333, cmurata@hama-med.ac.jp, (2) Department of Public Health/Health Information Dynamics, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan

Background: Job stress is associated with various health problems including insomnia. Insomnia affects 16 to 30% of daytime workers and is associated with lower morale, higher incidence of accidents, and higher medical costs. The aim of this study is to assess the impact of job stressors on insomnia.

Methods: Study population is 4,026 white collar civil servants aged 35- 66 years (3,392 men and 634 women). Self-administered questionnaire survey was conducted in 2002 on job stressors, health-related behaviors, psychosocial factors, and the presence or absence of insomnia. Annual health check-up data in the same year were also obtained. Those having any of the following are considered having insomnia; difficulty initiating sleep (DIS), difficulty maintaining sleep (DMS), and poor quality of sleep (PQS). Association of job stressors with insomnia was examined by age-adjusted logistic regression models. Finally, stepwise multivariate analyses were conducted with age, health-related behaviors (smoking, drinking, caffeine intake, exercise habit), blood pressure, BMI, and current illnesses as covariates.

Results: Prevalence of insomnia was 54.6% and 58.7% for men and women, respectively. Among men, after controlling for possible confounders, high demand, job dissatisfaction, poor workplace human relations, and overtime working hours were associated with insomnia with odds ratios of 1.38, 1.42, 1.65, and 1.17, respectively. Among women, poor workplace physical environment and skill underutilization were associated with insomnia with odds ratios of 1.59 and 1.71, respectively.

Conclusions: Job stressors were associated with insomnia after controlling for possible confounders. In addition, associated factors seemed to differ by gender.

Learning Objectives:

At the end of the session, audience will be able to;
• discuss the association between job stress and insomnia,
• list factors associated with insomnia among civil servants in Japan.

Keywords: Mental Health, Workplace Stressors

Presenting author's disclosure statement:

Not Answered