「東日本大震災による被害・生活環境・復興に関するアンケート」 調査結果ご報告
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Survey of Nuclear Disaster Evacuees from Futaba, Fukushima
1. About Futaba
Futaba is a town in Fukushima Prefecture, located within 2 to 10 km of Fukushima Daiichi Nuclear Power Plant, where the nuclear accident occurred following the Great East Japan Earthquake. While the tsunami and earthquake caused substantial damages in some areas of Futaba, the nuclear fallout had the largest impact. Since the areas in Futaba had remained under a government-mandated evacuation order for a long time, residents are still facing challenges in returning to their homes. Iwasaki, Sawada, and Aldrich (2017) and our survey results report unusually high levels of stress among Futaba residents following the prolonged evacuation period. For overall data description, see:
Sawada, Yasuyuki, Toyo Ashida, and Keiko Iwasaki (2023). "Heterogenous effects of the Great East Japan earthquake on prosociality of people depending on their age." Scientific Reports 13, 3211. https://doi.org/10.1038/s41598-023-29536-6.
Keiko Iwasaki, Myoung-jae Lee, and Yasuyuki Sawada (2019). "Verifying reference-dependent utility and loss aversion with Fukushima Nuclear-Disaster natural experiment," Journal of the Japanese and International Economies Volume 52, June 2019, pages 78-89.
Keiko Iwasaki, Yasuyuki Sawada, and Daniel Aldrich (2017), “Social capital as a shield against anxiety among displaced residents from Fukushima”, Natural Hazards 89, pages 405–421.
Also, a summary of the latest survey in 2022 is available here: 2022 Survey
2. Purpose of the survey
To capture the Futaba residents’ health status and living environment for policy improvement
3. Overview of the survey
(1) Target: All the household heads of Futaba who are evacuating to all over Japan. (Due to practical constraints, we only addressed our survey forms to household heads. According to the Population Census of 2010 and 2015, Futaba had around 6,900 residents and 2,600 households before the disaster in 2010, and about 6,600 residents and 2,300 households as of 2015.
(2) When: Distributed in July 2013, December 2014, July 2016, December 2017, July 2019, December 2020, and October 2022.
(3) How: With the support of the Futaba town office, we sent survey questionnaires to around 3,000 addresses listed as regular recipients of the town newsletter by post.
(4) Response rate: 22.5% or 653/2,900 in the 7th survey. The actual response rate would be higher than this because the 2,900 addresses include duplications of both registered addresses of household heads and those who requested the newsletter).
(5) Summary:
4. Main variables included in the survey
(1) Basic information
age, sex, current living place (city and area), pre-disaster living area in Futaba
(2) Disaster effect
Officially certified house damage by the Great East Japan Earthquake, current income, pre-disaster income, current house type, pre-disaster house type
(3) Health
K6 (Kessler et al. 2002)
(4) Other
Time preference measures, social capital measures
5. IRB approval
This study was approved by the Ethics Committee of the University of Tokyo .
6. Data availability
Data (without personal ID/information) and questionnaire will be accessible only for academic (replication) purposes upon a written request to the project leader, Yasuyuki Sawada (sawada@e.u-tokyo.ac.jp).
7. Project member
Project leader: Yasuyuki Sawada (Professor, University of Tokyo)
Project manager: Keiko Iwasaki (Researcher, NLI Research Institute)