{
  "abstract": "Large-scale disasters may disrupt community responses to out-of-hospital cardiac arrest (OHCA). However, long-term regional patterns of OHCA outcomes following compound disasters involving nuclear contamination remain unclear. We examined 188,783 family-, friend-, or colleague-witnessed OHCA cases in eastern Japan between 11 March 2007 and 10 March 2023 using nationwide, prospectively collected Utstein-style registry data. Regions were categorised as Fukushima, Iwate/Miyagi/Ibaraki, and other eastern Japanese prefectures based on tsunami damage and radioactive soil contamination. Trends were assessed across five periods from before the Great East Japan Earthquake to the COVID-19 pandemic. The primary outcome was neurologically favourable 1-month survival. During intensive reconstruction, crude survival rates were similar in Fukushima, Iwate/Miyagi/Ibaraki, and other eastern Japanese prefectures (4.40%, 4.69%, and 5.08%, respectively). During the post-intensive reconstruction/pre-pandemic period, survival was 3.10% in Fukushima, compared with 6.39% in Iwate/Miyagi/Ibaraki and 6.03% in other eastern Japanese prefectures; the adjusted odds ratio (aOR) for Fukushima versus Iwate/Miyagi/Ibaraki was 0.48 (95% confidence interval [CI], 0.36–0.64). During the pandemic, the rate remained lowest in Fukushima (2.35%), with an aOR of 0.46 (95% CI, 0.32–0.67) versus Iwate/Miyagi/Ibaraki. These findings demonstrate persistent regional differences in OHCA outcomes. However, the mechanisms underlying these differences could not be determined from available data.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Yoshinori Ito",
      "orcid": "0000-0002-6147-6104"
    },
    {
      "name": "Kentaro Omatsu"
    },
    {
      "name": "Hideo Inaba"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e2t325zm4gzs6.bib",
  "cited_by": 0,
  "doi": "10.1038/s41598-026-71148-3",
  "fulltext_url": null,
  "id": "e2t325zm4gzs6",
  "issns": [
    "2045-2322"
  ],
  "landing_url": "https://www.nature.com/articles/s41598-026-71148-3",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2711|Cardiac Arrest and Resuscitation"
    ]
  ],
  "openalex": "W7220719607",
  "pdf_url": "https://www.nature.com/articles/s41598-026-71148-3.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/e2t325zm4gzs6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.1038/s41598-026-71148-3",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41598-026-71148-3"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2711|Cardiac Arrest and Resuscitation",
      "subfield": "general"
    }
  ],
  "title": "Regional variations in out-of-hospital cardiac arrest outcomes after the Great East Japan Earthquake: a 16-year cohort study",
  "title_text": "Regional variations in out-of-hospital cardiac arrest outcomes after the Great East Japan Earthquake: a 16-year cohort study",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/e2t325zm4gzs6",
  "venue": "Scientific Reports",
  "versions": []
}