Evidence map›Paper›PMID 40084190›Full record

ArticleExperimental and therapeutic medicine2025

Incidence and mortality related risk factors in patients with severe traumatic brain injury: A meta‑analysis.

Ming-Wei Liu, Zhi-Qiang Ma, Ren-Li Liao, Wu-Mei Chen, Bing-Ran Zhang, Qiu-Juan Zhang, Yan-Lin Zhu, Shu-Ji Gao, Yan-E Chen

Abstract read
In one paragraph

Article in Experimental and therapeutic medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Impacts of intracranial pressure monitoring on mortality and length of stay in severe traumatic brain injury: a systematic review and meta-analysis.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
    Pooled it
  2. Severe traumatic brain injury and long-term survival: a meta-analysis on life expectancy and mortality trends.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Ming-Wei LiuDepartment of Emergency, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China.
Zhi-Qiang MaDepartment of Laboratory, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China.
Ren-Li LiaoDepartment of Spine Surgery, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China.
Wu-Mei ChenDepartment of Medical Affairs, Dali Bai Autonomous Prefecture People's Hospital, Dali, Yunnan 671000, P.R. China.
Bing-Ran ZhangDepartment of Emergency, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China.
Qiu-Juan ZhangDepartment of Emergency, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China.
Yan-Lin ZhuDepartment of Emergency, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China.
Shu-Ji GaoDepartment of Emergency, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650032, P.R. China.
Yan-E ChenDepartment of Human Resources, Science and Education, Second People's Hospital of Baoshan City, Baoshan, Yunnan 678000, P.R. China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The present study aimed to clarify the onset of traumatic brain injury (TBI) and identify mortality-related risk factors in patients with severe TBI, to enable the early identification of high-risk individuals and timely implementation of prevention and treatment strategies to minimize mortality rates. Comprehensive database searches were conducted across Web of Science, PubMed, CINAHL and EMBASE, covering publications from database inception until October 17, 2023. Search terms in English included 'head trauma', 'brain trauma', 'mortality', 'death' and 'risk factor'. In total, two independent researchers screened and extracted the data on mortality onset and associated risk factors in patients with severe TBI. Meta-analysis was performed using R 4.2.2. A total of 33 cohort studies, including 71,718 patients with severe TBI, were selected for meta-analysis. The data indicated an overall mortality rate of 27.8% (95%CI: 22.5-33.2%) from database inception until October 17, 2023. Subgroup analysis revealed a mortality rate of 25.2% (95%CI: 20.2-30.1%) in developed countries, compared with 38.0% (95%CI: 21.4-54.7%) in developing countries. Additionally, the mean age of deceased patients was significantly higher compared with that of survivors (41.53±16.47). Key risk factors found to be associated with mortality included anemia [relative risk (RR), 1.42; 95%CI, 1.04-1.93], diabetes mellitus (RR, 1.40; 95%CI, 1.00-1.96), coagulopathy (RR, 4.31; 95%CI, 2.31-8.05), shock (RR, 3.41; 95%CI, 2.31-5.04) and systolic blood pressure≤90 mmHg (RR, 2.32; 95%CI, 1.65-3.27). Furthermore, pre-hospital intubation (RR, 1.48; 95%CI, 1.13-1.92),hypotension (RR, 2.04; 95%CI: 1.58, 2.63), hypoxemia (RR, 1.42; 95%CI: 1.13, 1.79), subdural hemorrhage (RR, 1.99; 95%CI: 1.50, 2.62), subarachnoid hemorrhage (RR, 1.64; 95%CI: 1.09, 2.47) and subdural hematoma (SDH; RR, 1.50; 95%CI: 1.04, 2.17). was identified to be a significant risk factor during hospitalization treatment. These results suggest that various factors, such as age, anemia, diabetes, shock, hypotension, hypoxemia, trauma scores and brain injury types, can all contribute to mortality risk in patients with severe TBI. Addressing these risk factors will likely be important for reducing mortality in this patient population.

Indexed as

incidencemeta-analysismortalityphysical disabilitiestraumatic brain injury

Identifiers

PMID40084190
PMCPMC11904872

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.