Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques

Abstract Predictive models for determining coronavirus disease 2019 (COVID-19) severity have been established; however, the complexity of the interactions among factors limits the use of conventional statistical methods. This study aimed to establish a simple and accurate predictive model for COVID-...

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Main Authors: Takuya Ozawa, Shotaro Chubachi, Ho Namkoong, Shota Nemoto, Ryo Ikegami, Takanori Asakura, Hiromu Tanaka, Ho Lee, Takahiro Fukushima, Shuhei Azekawa, Shiro Otake, Kensuke Nakagawara, Mayuko Watase, Katsunori Masaki, Hirofumi Kamata, Norihiro Harada, Tetsuya Ueda, Soichiro Ueda, Takashi Ishiguro, Ken Arimura, Fukuki Saito, Takashi Yoshiyama, Yasushi Nakano, Yoshikazu Muto, Yusuke Suzuki, Ryuya Edahiro, Koji Murakami, Yasunori Sato, Yukinori Okada, Ryuji Koike, Makoto Ishii, Naoki Hasegawa, Yuko Kitagawa, Katsushi Tokunaga, Akinori Kimura, Satoru Miyano, Seishi Ogawa, Takanori Kanai, Koichi Fukunaga, Seiya Imoto
Format: Article
Language:English
Published: Nature Portfolio 2025-03-01
Series:Scientific Reports
Subjects:
Online Access:https://doi.org/10.1038/s41598-025-85733-5
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author Takuya Ozawa
Shotaro Chubachi
Ho Namkoong
Shota Nemoto
Ryo Ikegami
Takanori Asakura
Hiromu Tanaka
Ho Lee
Takahiro Fukushima
Shuhei Azekawa
Shiro Otake
Kensuke Nakagawara
Mayuko Watase
Katsunori Masaki
Hirofumi Kamata
Norihiro Harada
Tetsuya Ueda
Soichiro Ueda
Takashi Ishiguro
Ken Arimura
Fukuki Saito
Takashi Yoshiyama
Yasushi Nakano
Yoshikazu Muto
Yusuke Suzuki
Ryuya Edahiro
Koji Murakami
Yasunori Sato
Yukinori Okada
Ryuji Koike
Makoto Ishii
Naoki Hasegawa
Yuko Kitagawa
Katsushi Tokunaga
Akinori Kimura
Satoru Miyano
Seishi Ogawa
Takanori Kanai
Koichi Fukunaga
Seiya Imoto
author_facet Takuya Ozawa
Shotaro Chubachi
Ho Namkoong
Shota Nemoto
Ryo Ikegami
Takanori Asakura
Hiromu Tanaka
Ho Lee
Takahiro Fukushima
Shuhei Azekawa
Shiro Otake
Kensuke Nakagawara
Mayuko Watase
Katsunori Masaki
Hirofumi Kamata
Norihiro Harada
Tetsuya Ueda
Soichiro Ueda
Takashi Ishiguro
Ken Arimura
Fukuki Saito
Takashi Yoshiyama
Yasushi Nakano
Yoshikazu Muto
Yusuke Suzuki
Ryuya Edahiro
Koji Murakami
Yasunori Sato
Yukinori Okada
Ryuji Koike
Makoto Ishii
Naoki Hasegawa
Yuko Kitagawa
Katsushi Tokunaga
Akinori Kimura
Satoru Miyano
Seishi Ogawa
Takanori Kanai
Koichi Fukunaga
Seiya Imoto
author_sort Takuya Ozawa
collection DOAJ
description Abstract Predictive models for determining coronavirus disease 2019 (COVID-19) severity have been established; however, the complexity of the interactions among factors limits the use of conventional statistical methods. This study aimed to establish a simple and accurate predictive model for COVID-19 severity using an explainable machine learning approach. A total of 3,301 patients ≥ 18 years diagnosed with COVID-19 between February 2020 and October 2022 were included. The discovery cohort comprised patients whose disease onset fell before October 1, 2020 (N = 1,023), and the validation cohort comprised the remaining patients (N = 2,278). Pointwise linear and logistic regression models were used to extract 41 features. Reinforcement learning was used to generate a simple model with high predictive accuracy. The primary evaluation was the area under the receiver operating characteristic curve (AUC). The predictive model achieved an AUC of ≥ 0.905 using four features: serum albumin levels, lactate dehydrogenase levels, age, and neutrophil count. The highest AUC value was 0.906 (sensitivity, 0.842; specificity, 0.811) in the discovery cohort and 0.861 (sensitivity, 0.804; specificity, 0.675) in the validation cohort. Simple and well-structured predictive models were established, which may aid in patient management and the selection of therapeutic interventions.
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spelling doaj-art-0ae5a302831c4d9d98e47711fc9732cd2025-08-20T02:41:31ZengNature PortfolioScientific Reports2045-23222025-03-0115111210.1038/s41598-025-85733-5Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniquesTakuya Ozawa0Shotaro Chubachi1Ho Namkoong2Shota Nemoto3Ryo Ikegami4Takanori Asakura5Hiromu Tanaka6Ho Lee7Takahiro Fukushima8Shuhei Azekawa9Shiro Otake10Kensuke Nakagawara11Mayuko Watase12Katsunori Masaki13Hirofumi Kamata14Norihiro Harada15Tetsuya Ueda16Soichiro Ueda17Takashi Ishiguro18Ken Arimura19Fukuki Saito20Takashi Yoshiyama21Yasushi Nakano22Yoshikazu Muto23Yusuke Suzuki24Ryuya Edahiro25Koji Murakami26Yasunori Sato27Yukinori Okada28Ryuji Koike29Makoto Ishii30Naoki Hasegawa31Yuko Kitagawa32Katsushi Tokunaga33Akinori Kimura34Satoru Miyano35Seishi Ogawa36Takanori Kanai37Koichi Fukunaga38Seiya Imoto39Division of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDepartment of Infectious Diseases, Keio University School of MedicineIndustrial and Digital Business Unit, Hitachi, LtdIndustrial and Digital Business Unit, Hitachi, LtdDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDepartment of Respiratory Medicine, Faculty of Medicine, Graduate School of Medicine, Juntendo UniversityDepartment of Respiratory Medicine, Osaka Saiseikai Nakatsu HospitalJCHO (Japan Community Health Care Organization, Internal Medicine, Saitama Medical CenterDepartment of Respiratory Medicine, Saitama Cardiovascular and Respiratory CenterDepartment of Respiratory Medicine, Tokyo Women’s Medical UniversityDepartment of Emergency and Critical Care Medicine, Kansai Medical University General Medical CenterRespiratory Disease Center, Fukujuji HospitalDepartment of Internal Medicine, Kawasaki Municipal Ida HospitalDepartment of Infectious Diseases, Tosei General HospitalDepartment of Clinical Medicine (Laboratory of Bioregulatory Medicine), Kitasato University School of PharmacyDepartment of Statistical Genetics, Osaka University Graduate School of MedicineDepartment of Respiratory Medicine, Tohoku University Graduate School of MedicineBiostatistics Unit, Clinical and Translational Research Center, Keio University HospitalDepartment of Statistical Genetics, Osaka University Graduate School of MedicineHealth Science Research and Development Center, Tokyo Medical and Dental UniversityDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDepartment of Infectious Diseases, Keio University School of MedicineDepartment of Surgery, Keio University School of MedicineGenome Medical Science Project (Toyama), National Center for Global Health and MedicineInstitute of Research, Tokyo Medical and Dental UniversityM&D Data Science Center, Tokyo Medical and Dental UniversityDepartment of Pathology and Tumor Biology, Kyoto UniversityDivision of Gastroenterology and Hepatology, Department of Medicine, Keio University School of MedicineDivision of Pulmonary Medicine, Department of Internal Medicine, Keio University School of MedicineDivision of Health Medical Intelligence, Human Genome Center, the Institute of Medical Science, the University of TokyoAbstract Predictive models for determining coronavirus disease 2019 (COVID-19) severity have been established; however, the complexity of the interactions among factors limits the use of conventional statistical methods. This study aimed to establish a simple and accurate predictive model for COVID-19 severity using an explainable machine learning approach. A total of 3,301 patients ≥ 18 years diagnosed with COVID-19 between February 2020 and October 2022 were included. The discovery cohort comprised patients whose disease onset fell before October 1, 2020 (N = 1,023), and the validation cohort comprised the remaining patients (N = 2,278). Pointwise linear and logistic regression models were used to extract 41 features. Reinforcement learning was used to generate a simple model with high predictive accuracy. The primary evaluation was the area under the receiver operating characteristic curve (AUC). The predictive model achieved an AUC of ≥ 0.905 using four features: serum albumin levels, lactate dehydrogenase levels, age, and neutrophil count. The highest AUC value was 0.906 (sensitivity, 0.842; specificity, 0.811) in the discovery cohort and 0.861 (sensitivity, 0.804; specificity, 0.675) in the validation cohort. Simple and well-structured predictive models were established, which may aid in patient management and the selection of therapeutic interventions.https://doi.org/10.1038/s41598-025-85733-5COVID-19Machine learningArtificial intelligence
spellingShingle Takuya Ozawa
Shotaro Chubachi
Ho Namkoong
Shota Nemoto
Ryo Ikegami
Takanori Asakura
Hiromu Tanaka
Ho Lee
Takahiro Fukushima
Shuhei Azekawa
Shiro Otake
Kensuke Nakagawara
Mayuko Watase
Katsunori Masaki
Hirofumi Kamata
Norihiro Harada
Tetsuya Ueda
Soichiro Ueda
Takashi Ishiguro
Ken Arimura
Fukuki Saito
Takashi Yoshiyama
Yasushi Nakano
Yoshikazu Muto
Yusuke Suzuki
Ryuya Edahiro
Koji Murakami
Yasunori Sato
Yukinori Okada
Ryuji Koike
Makoto Ishii
Naoki Hasegawa
Yuko Kitagawa
Katsushi Tokunaga
Akinori Kimura
Satoru Miyano
Seishi Ogawa
Takanori Kanai
Koichi Fukunaga
Seiya Imoto
Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
Scientific Reports
COVID-19
Machine learning
Artificial intelligence
title Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
title_full Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
title_fullStr Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
title_full_unstemmed Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
title_short Predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
title_sort predicting coronavirus disease 2019 severity using explainable artificial intelligence techniques
topic COVID-19
Machine learning
Artificial intelligence
url https://doi.org/10.1038/s41598-025-85733-5
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