Aim: The Great East Japan Earthquake and in particular, the Fukushima Daiichi Nuclear Power Plant accident, have had a serious psychological impact on not only residents, but also relief workers in Fukushima. Although public employees work in highly stressful situations and play a very important role in long-term relief, their psychiatric features have yet to be clarified. The two aims of this study were to identify the current prevalence rate of depression and post-traumatic stress disorder among public employees working in the disaster area using diagnostic interviews, and to speculate on the psychosocial factors affecting their mental condition.Methods: We conducted diagnostic interviews and self-administered questionnaires with 168 public employees working in two coastal towns in Fukushima.Results: Results showed that the current prevalence of depression among public employees is as high as 17.9%, in contrast to the relatively low prevalence of post-traumatic stress disorder (4.8%). Based on the results of self-administered questionnaires and interview contents, frequent exposure to strong complaints or anger from residents and role conflicts were considered the cause of the high prevalence of depression.
Conclusion:The present study reveals the serious mental status of public employees working in Fukushima and sheds light on the urgent need to establish an efficient care network to provide adequate psychiatric intervention.Key words: depression, Fukushima nuclear accident, occupational health, post-traumatic stress disorder, relief work. I N 2011, THE Great East Japan Earthquake caused serious damage to vast areas of the Tohoku region, including Fukushima Prefecture. The tsunami totally destroyed the cooling system at the Fukushima Daiichi Nuclear Power Plant and led to several explosions, causing widespread diffusion of radioactive materials. Over 400 000 residents living within a 30-km radius of the plant were evacuated in the first 5 days after the disaster. Although the Japanese government gradually lifted living restrictions within the evacuation zone, over 110 000 people have not returned to their original homes.
2After the disaster, several studies focusing on the mental health of people living in the Tohoku area were conducted.3-7 Based on a self-administered questionnaire using the Kessler 6-item Scale (K6), 8 Yokoyama et al.7 showed that 42.6% of the respondents living in Iwate Prefecture had moderate or serious mental health problems 6-12 months after the disaster. Likewise, Koyama et al.3 found that 35.9% of all respondents in Miyagi Prefecture who completed the K6 questionnaire were experiencing serious psychological distress. In Fukushima, a major epidemiological survey was performed on the approximately 210 000 original residents in the evacuation zone using several self-administered questionnaires to identify the psychological consequences caused not only by the earthquake and tsunami, but also the nuclear disaster. 4,6 The survey revealed that 21.6% of the total respondents were estimated t...