Are lowered socioeconomic circumstances causally related to tooth loss? A natural experiment involving the 2011 great east Japan earthquake
Open accessAbstract
Oral health status is correlated with socioeconomic status. However, the causal nature of the relationship is not established. Here we describe a natural experiment involving deteriorating socioeconomic circumstances following exposure to the 2011 Great East Japan Earthquake and Tsunami. We investigated the relationship between subjective economic deterioration and housing damage due to the disaster and tooth loss in a cohort of community-dwelling residents (n = 3,039), from whom we obtained information about socioeconomic status and health status in 2010 (i.e., predating the disaster). A follow-up survey was performed in 2013 (postdisaster), and 82.1% of the 4,380 eligible survivors responded. We estimated the impact of subjective economic deterioration and housing damage due to the disaster on tooth loss by fitting an instrumental variable probit model. Subjective economic deterioration and housing damage due to the disaster were significantly associated with 8.1% and 1.7% increases in the probability of tooth loss (probit coefficients were 0.469 (95% confidence interval: 0.065, 0.872) and 0.103 (95% confidence interval: 0.011, 0.196), respectively). In this natural experiment, we confirmed the causal relationship between deteriorating socioeconomic circumstances and tooth loss.
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- Authors
- Matsuyama, Y., Aida, J., Tsuboya, T., Hikichi, H., Kondo, K., Kawachi, I., & Osaka, K.
- Affiliations
- Tohoku University (JP)
- Corresponding author
- Matsuyama, Yusuke
- ORCID
- Venue
- American Journal of Epidemiology
- Publisher
- Oxford University Press (OUP)
- Published
- 2017-05-04
- Volume
- 186
- Issue
- 1
- Pages
- 54-62
- ISSN
- 0002-9262 (ISSN-L)
- 1476-6256
- PMC
- PMC5859979
- OpenAlex
- W2611633442
- Cited by
- 39
- References
- 37
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 5 · 2023: 6 · 2022: 6 · 2021: 4 · 2020: 6 · 2019: 3 · 2018: 4
- FWCI
- 4.91
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- American Journal of Epidemiology (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Institutes of Health
- National Institute on Aging
- National Institute on Aging, US National Institutes of Health (1R01AG042463-01A1)
- Japanese Ministry of Health, Labour and Welfare (H22-Choju-Shitei-008, H24-Choju-Wakate-009, H25-Choju-Ippan-003, H28-Choju-Ippan-002)
- Japanese Society for the Promotion of Science (KAKENHI 23243070, 22390400, 24390469, 15H01972)
- Strategic Research Foundation
- Japanese Ministry of Education, Culture, Sports, Science and Technology (S0991035)
- Japan Agency for Medical Research and Development
- Topics
- Health Sciences › Dentistry › Periodontics › Dental Health and Care Utilization
- Social Sciences › Health › Health disparities and outcomes
- Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
- Keywords
- tooth loss, socioeconomic status, Great East Japan Earthquake, natural experiment, housing damage, disaster exposure, oral health, causal relationship
- MeSH terms
- Aged, Aged, 80 and over, Female, Housing, Humans, Japan, Male, Socioeconomic Factors, Causality, Tooth Loss, Earthquakes, Tsunamis
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