{
  "abstract": "Background/Objectives: Patient characteristics and concomitant injuries may influence hospital length of stay (LOS) and discharge disposition after rib fractures. We examined these associations in a selected Japanese trauma-registry population. Methods: This retrospective study used Japan Trauma Data Bank records from 2019–2021. Adult survivors with target rib-fracture Abbreviated Injury Scale (AIS) codes, no additional recorded chest AIS codes, and maximum extra-chest AIS < 2 were included; recorded chest compressions were excluded. The one- or two-rib and three-or-more-rib groups were analyzed separately using negative binomial regression for recorded index-hospital LOS and Firth logistic regression for transfer versus home discharge. Results: Eligible samples comprised 149 and 787 patients; updated complete-case LOS samples were 126 and 694, and transfer samples were 142 and 702. In the linear-summary models, the adjusted LOS ratio for two versus one fractured rib was 1.936 (95% CI, 1.227–3.055). In the larger cohort, the ratios were 1.231 (1.156–1.310) per 10 years of age and 0.796 (0.722–0.879) per Glasgow Coma Scale (GCS) point. Adjusted transfer odds ratios per Charlson Comorbidity Index (CCI) point were 2.630 (1.531–4.960) and 1.278 (1.109–1.479). Flexible-age analyses indicated nonlinearity for LOS in the smaller cohort and transfer in the larger cohort. Some estimates changed with eligibility criteria and model specification. Conclusions: Associations with recorded LOS and interhospital transfer were observed among selected survivors, but their interpretation is limited by selection, incomplete data, unmeasured institutional and functional characteristics, and model sensitivity. These exploratory results do not establish causal effects or validated clinical decision rules.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Legal Medicine, Shiga University of Medical Science, Shiga 520-2192, Japan",
    "Critical Care Center, Emergency Medicine, Kyoto Medical Center, Kyoto 612-8555, Japan",
    "Critical Care Center, Emergency Medicine, Kyoto Daini Red Cross Hospital, Kyoto 602-8026, Japan"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Keisuke Motohama"
    },
    {
      "affs": [
        2
      ],
      "name": "Wataru Ishii",
      "orcid": "0000-0002-4992-2255"
    },
    {
      "affs": [
        0
      ],
      "name": "Mami Nakamura",
      "orcid": "0000-0003-0867-4352"
    },
    {
      "affs": [
        1
      ],
      "name": "Kosai Cho"
    },
    {
      "affs": [
        0
      ],
      "name": "Masahito Hitosugi",
      "orcid": "0000-0001-5243-8766"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/dm8901zngy144.bib",
  "cited_by": 0,
  "doi": "10.3390/jcm15218728",
  "fulltext_url": null,
  "id": "dm8901zngy144",
  "issns": [
    "2077-0383"
  ],
  "landing_url": "https://www.mdpi.com/2077-0383/15/21/8728",
  "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": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-09",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/dm8901zngy144.ris",
  "sources": [
    {
      "first_seen": "2026-11-10T00:21:41Z",
      "native_id": "10.3390/jcm15218728",
      "source": "crossref",
      "url": "https://www.mdpi.com/2077-0383/15/21/8728"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "journal-openalex:F27",
      "subfield": "general"
    }
  ],
  "title": "Factors Associated with Hospital Length of Stay and Interhospital Transfer in Patients with Rib Fractures: A Retrospective Study Using the Japan Trauma Data Bank",
  "title_text": "Factors Associated with Hospital Length of Stay and Interhospital Transfer in Patients with Rib Fractures: A Retrospective Study Using the Japan Trauma Data Bank",
  "type": "peer-reviewed",
  "updated_at": "2026-11-10T00:21:41Z",
  "url": "https://research.draconitic.com/paper/dm8901zngy144",
  "venue": "Journal of Clinical Medicine",
  "versions": []
}