Machine learning-based prediction models for accidental hypothermia patients

Okada, Yohei; Matsuyama, Tasuku; Morita, Sachiko; Ehara, Naoki; Miyamae, Nobuhiro; Jo, Takaaki; Sumida, Yasuyuki; Okada, Nobunaga; Watanabe, Makoto; Nozawa, Masahiro; Tsuruoka, Ayumu; Fujimoto, Yoshihiro; Okumura, Yoshiki; Kitamura, Tetsuhisa; Iiduka, Ryoji; Ohtsuru, Shigeru

doi:https://doi.org/10.1186/s40560-021-00525-z

Machine learning-based prediction models for accidental hypothermia patients

Okada, Yohei; Matsuyama, Tasuku; Morita, Sachiko et al.

Journal of Intensive Care, 2021, 9, 6

Number of Access:1,337（2025-10-21 12:16 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/78364

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Title	Machine learning-based prediction models for accidental hypothermia patients
Creator	CreatorName Okada, Yohei
	NRID 1000050829025 1000050829025 CreatorName Matsuyama, Tasuku
	CreatorName Morita, Sachiko
	CreatorName Ehara, Naoki
	CreatorName Miyamae, Nobuhiro
	CreatorName Jo, Takaaki
	CreatorName Sumida, Yasuyuki
	CreatorName Okada, Nobunaga
	CreatorName Watanabe, Makoto
	CreatorName Nozawa, Masahiro
	CreatorName Tsuruoka, Ayumu
	CreatorName Fujimoto, Yoshihiro
	CreatorName Okumura, Yoshiki
	NRID 1000030639810 1000030639810 ORCID 0000-0003-0107-0580 0000-0003-0107-0580 researchmap permalink Kitamura_T Kitamura_T Scopus Author ID 22234282700 22234282700 CreatorName Kitamura, Tetsuhisa
	CreatorName Iiduka, Ryoji
	NRID 1000060437225 1000060437225 CreatorName Ohtsuru, Shigeru
Subject	Accidental hypothermia
	Artificial intelligence
	Gradient boosting tree
	Lasso
	Machine learning
	Prediction
	Random forest
Description	Okada, Y., Matsuyama, T., Morita, S., et al. Machine learning-based prediction models for accidental hypothermia patients. j intensive care 9, 6 (2021). https://doi.org/10.1186/s40560-021-00525-z
Abstract	Background: Accidental hypothermia is a critical condition with high risks of fatal arrhythmia, multiple organ failure, and mortality; however, there is no established model to predict the mortality. The present study aimed to develop and validate machine learning-based models for predicting in-hospital mortality using easily available data at hospital admission among the patients with accidental hypothermia. Method: This study was secondary analysis of multi-center retrospective cohort study (J-point registry) including patients with accidental hypothermia. Adult patients with body temperature 35.0 °C or less at emergency department were included. Prediction models for in-hospital mortality using machine learning (lasso, random forest, and gradient boosting tree) were made in development cohort from six hospitals, and the predictive performance were assessed in validation cohort from other six hospitals. As a reference, we compared the SOFA score and 5A score. Results: We included total 532 patients in the development cohort [N = 288, six hospitals, in-hospital mortality: 22.0% (64/288)], and the validation cohort [N = 244, six hospitals, in-hospital mortality 27.0% (66/244)]. The C-statistics [95% CI] of the models in validation cohorts were as follows: lasso 0.784 [0.717-0.851] , random forest 0.794[0.735-0.853], gradient boosting tree 0.780 [0.714-0.847], SOFA 0.787 [0.722-0.851], and 5A score 0.750[0.681-0.820]. The calibration plot showed that these models were well calibrated to observed in-hospital mortality. Decision curve analysis indicated that these models obtained clinical net-benefit. Conclusion: This multi-center retrospective cohort study indicated that machine learning-based prediction models could accurately predict in-hospital mortality in validation cohort among the accidental hypothermia patients. These models might be able to support physicians and patient’s decision-making. However, the applicability to clinical settings, and the actual clinical utility is still unclear; thus, further prospective study is warranted to evaluate the clinical usefulness.
Publisher	BioMed Central Ltd
Source Title	Journal of Intensive Care
Volume (Issue)	9
Page	6
Date of Issued	2021-01-09
Language	English
Handle URL	https://hdl.handle.net/11094/78364
eISSN	20520492
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1186/s40560-021-00525-z
Access Rights	open access
CopyRight	© 2021 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Journal of Intensive Care. 2021, 9, p. 6
DC.title	Machine learning-based prediction models for accidental hypothermia patients
DC.creator	Okada, Yohei
	Matsuyama, Tasuku
	Morita, Sachiko
	Ehara, Naoki
	Miyamae, Nobuhiro
	Jo, Takaaki
	Sumida, Yasuyuki
	Okada, Nobunaga
	Watanabe, Makoto
	Nozawa, Masahiro
	Tsuruoka, Ayumu
	Fujimoto, Yoshihiro
	Okumura, Yoshiki
	Kitamura, Tetsuhisa
	Iiduka, Ryoji
	Ohtsuru, Shigeru
DC.publisher	BioMed Central Ltd
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2021-01-09
DC.identifier	https://doi.org/10.1186/s40560-021-00525-z
DC.subject	Accidental hypothermia
	Artificial intelligence
	Gradient boosting tree
	Lasso
	Machine learning
	Prediction
	Random forest
DC.description	Okada, Y., Matsuyama, T., Morita, S., et al. Machine learning-based prediction models for accidental hypothermia patients. j intensive care 9, 6 (2021). https://doi.org/10.1186/s40560-021-00525-z
DCTERMS.abstract	Background: Accidental hypothermia is a critical condition with high risks of fatal arrhythmia, multiple organ failure, and mortality; however, there is no established model to predict the mortality. The present study aimed to develop and validate machine learning-based models for predicting in-hospital mortality using easily available data at hospital admission among the patients with accidental hypothermia. Method: This study was secondary analysis of multi-center retrospective cohort study (J-point registry) including patients with accidental hypothermia. Adult patients with body temperature 35.0 °C or less at emergency department were included. Prediction models for in-hospital mortality using machine learning (lasso, random forest, and gradient boosting tree) were made in development cohort from six hospitals, and the predictive performance were assessed in validation cohort from other six hospitals. As a reference, we compared the SOFA score and 5A score. Results: We included total 532 patients in the development cohort [N = 288, six hospitals, in-hospital mortality: 22.0% (64/288)], and the validation cohort [N = 244, six hospitals, in-hospital mortality 27.0% (66/244)]. The C-statistics [95% CI] of the models in validation cohorts were as follows: lasso 0.784 [0.717-0.851] , random forest 0.794[0.735-0.853], gradient boosting tree 0.780 [0.714-0.847], SOFA 0.787 [0.722-0.851], and 5A score 0.750[0.681-0.820]. The calibration plot showed that these models were well calibrated to observed in-hospital mortality. Decision curve analysis indicated that these models obtained clinical net-benefit. Conclusion: This multi-center retrospective cohort study indicated that machine learning-based prediction models could accurately predict in-hospital mortality in validation cohort among the accidental hypothermia patients. These models might be able to support physicians and patient’s decision-making. However, the applicability to clinical settings, and the actual clinical utility is still unclear; thus, further prospective study is warranted to evaluate the clinical usefulness.
DC.rights	© 2021 The Author(s). This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	78364
citation_title	Machine learning-based prediction models for accidental hypothermia patients
citation_author	Okada, Yohei
	Matsuyama, Tasuku
	Morita, Sachiko
	Ehara, Naoki
	Miyamae, Nobuhiro
	Jo, Takaaki
	Sumida, Yasuyuki
	Okada, Nobunaga
	Watanabe, Makoto
	Nozawa, Masahiro
	Tsuruoka, Ayumu
	Fujimoto, Yoshihiro
	Okumura, Yoshiki
	Kitamura, Tetsuhisa
	Iiduka, Ryoji
	Ohtsuru, Shigeru
citation_publisher	BioMed Central Ltd
citation_language	English
citation_date	2021-01-09
citation_journal_title	Journal of Intensive Care
citation_volume	9
citation_firstpage	6
citation_doi	https://doi.org/10.1186/s40560-021-00525-z
citation_public_url	https://hdl.handle.net/11094/78364

Machine learning-based prediction models for accidental hypothermia patients

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