Evidence map›Paper›PMID 31895836›Full record

Observational studyMedicine2020

Impact of nighttime and weekends on outcomes of emergency trauma patients: A nationwide observational study in Japan.

Tomoya Hirose, Tetsuhisa Kitamura, Yusuke Katayama, Junya Sado, Takeyuki Kiguchi, Tasuku Matsuyama, Kosuke Kiyohara, Hiroki Takahashi, Jotaro Tachino, Yuko Nakagawa and 2 more

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
5.4field-weighted citation impact, top 3% of its field
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

22 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Association between time to transfusion and outcomes in patients with traumatic haemorrhagic shock: an analysis of a nationwide trauma registry in Japan.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2026
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  10. Survey of trauma patients injured by falling or flying objects in Japan based on the Japan Trauma Data Bank.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2022
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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

12 authors at 7 institutions in 1 country.

Tomoya HiroseDepartment of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine.
Tetsuhisa KitamuraDivision of Environmental Medicine and Population Sciences, Department of Social and Environmental Medicine.
Yusuke KatayamaDepartment of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine.
Junya SadoMedicine for Sports and Performing Arts, Department of Health and Sport Sciences, Osaka University Graduate School of Medicine.
Takeyuki KiguchiKyoto University Health Services.
Tasuku MatsuyamaDepartment of Emergency Medicine, Kyoto Prefectural University of Medicine, Kyoto.
Kosuke KiyoharaDepartment of Food Science, Faculty of Home Economics, Otsuma Women's University, Tokyo.
Hiroki TakahashiDepartment of Emergency and Critical Care Medicine, Kansai Medical University, Osaka, Japan.
Jotaro TachinoDepartment of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine.
Yuko NakagawaDepartment of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine.
Yasuaki MizushimaEmergency and Critical Care Center, Osaka Police Hospital.
Takeshi ShimazuDepartment of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine.
Osaka University · JPOsaka Police Hospital · JPKansai Medical University · JPKyoto Prefectural University of Medicine · JPKyoto University · JPOsaka University of Health and Sport Sciences · JPOtsuma Women's University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The impact of time of day or day of week on the survival of emergency trauma patients is still controversial. The purpose of this study was to evaluate the outcomes of these patients according to time of day or day of week of emergency admission by using data from the nationwide Japan Trauma Data Bank (JTDB).This study enrolled 236,698 patients registered in the JTDB database from 2004 to 2015, and defined daytime as 09:00 AM to 16:59 PM and nighttime as 17:00 PM to 08:59 AM, weekdays as Monday to Friday, and weekends as Saturday, Sunday, and national holidays. The outcome measures were death in the emergency room (ER) and discharge to death.In total, 170,622 patients were eligible for our analysis. In a multivariable logistic regression adjusted for confounding factors, both death in the ER and death at hospital discharge were significantly lower during the daytime than at nighttime (623/76,162 [0.82%] vs 954/94,460 [1.01%]; adjusted odds ratio [AOR] 0.79; 95% confidence interval [CI] 0.71-0.88 and 5765/76,162 [7.57%] vs 7270/94,460 [7.70%]; AOR 0.88; 95% CI 0.85-0.92). In contrast, the weekdays/weekends was not significantly related to either death in the ER (1058/114,357 [0.93%] vs 519/56,265 [0.92%]; AOR 0.95; 95% CI 0.85-1.06) or death at hospital discharge (8975/114,357 [7.85%] vs 4060/56,265 [7.22%]; AOR 1.02; 95% CI 0.97-1.06).In this population of emergency trauma patients in Japan, both death in the ER and death at hospital discharge were significantly lower during the daytime than at night, but the weekdays/weekends was not associated with outcomes of these patients.

Indexed as

AdultAgedEmergency Medical ServicesFemaleHospital MortalityHumansJapanMaleMiddle AgedRetrospective Studies

Identifiers

PMID31895836
PMCPMC6946404
OpenAlexW2996995351

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

None linked

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.