Length of hospital stay and mortality associated with burns from assault: a retrospective study with inverse probability weighting analysis

Ryo Yamamoto; Mitsunobu Toyosaki; Tomohiro Kurihara; Junichi Sasaki

doi:10.1093/burnst/tkaa001

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Length of hospital stay and mortality associated with burns from assault: a retrospective study with inverse probability weighting analysis

更新时间：2022-06-09

- Length of hospital stay and mortality associated with burns from assault: a retrospective study with inverse probability weighting analysis
- Burns & Trauma Vol. 8, Issue 1, (2020)
- 作者机构：
  
  Department of Emergency and Critical Care Medicine
- 作者简介：
- 基金信息：
- DOI：10.1093/burnst/tkaa001
  CLC：
- Published：2020，
  
  Published Online：1 April 2020，
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Ryo Yamamoto, Mitsunobu Toyosaki, Tomohiro Kurihara, Junichi Sasaki, Length of hospital stay and mortality associated with burns from assault: a retrospective study with inverse probability weighting analysis, Burns & Trauma, Volume 8, 2020, tkaa001, https://doi.org/10.1093/burnst/tkaa001
DOI：

Ryo Yamamoto, Mitsunobu Toyosaki, Tomohiro Kurihara, Junichi Sasaki, Length of hospital stay and mortality associated with burns from assault: a retrospective study with inverse probability weighting analysis, Burns & Trauma, Volume 8, 2020, tkaa001, https://doi.org/10.1093/burnst/tkaa001 DOI：

摘要

Abstract

BackgroundBurns resulting from assaults account for considerable morbidity and mortality among patients with burn injuries around the world. However

it is still unclear whether unfavorable clinical outcomes are associated primarily with the severity of the injuries. To elucidate the direct relationship between burns resulting from assaults and mortality and/or length of hospital stays

we performed this study with the hypothesis that burns from assault would be independently associated with fewer hospital-free days than would burns from other causes

regardless of the severity of burn injuries.MethodsWe conducted a retrospective cohort study

using a city-wide burn registry (1996–2017) accounting for 14 burn centers in Tokyo

Japan. Patients who arrived within 24 hours after injury were included

and those with self-inflicted burn injuries were excluded. Patients were divided into two groups according to mechanism of burns (assault vs. accident)

and the number of hospital-free days until day 30 after injury (a composite of in-hospital death and hospital length of stay) was compared between the groups. To estimate the probability that an injury would be classified as an assault

we calculated propensity scores

using multivariate logistic regression analyses adjusted for known outcome predictors. We also performed an inverse probability weighting (IPW) analysis to compare adjusted numbers of hospital-free days.ResultsOf 7419 patients in the registry with burn injuries during the study period

5119 patients were included in this study. Of these

113 (2.2%) were injured as a result of assault; they had significantly fewer hospital-free days than did those with burns caused by accident (18 [27] vs. 24 [20] days; coefficient = |$-$|3.4 [|$-$|5.5 to |$-$|1.3] days; p = 0.001). IPW analyses similarly revealed the independent association between assault burn injury and fewer hospital-free days (adjusted coefficient = |$-$|0.6 [|$-$|1.0 to |$-$|0.1] days; p = 0.009).ConclusionsBurn from assault was independently associated with fewer hospital-free days

regardless of the severity of burn injuries. The pathophysiological mechanism underlying the relationship should be further studied in a prospective observational study.

关键词

Keywords

AssaultBurnMortalityLength of hospital stayInverse probability weighting

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