根据可解释的机器学习,对访问急诊室的败血症患者的早期死亡率预测:现实世界的多中心研究
Sang Won Park1,2, Na Young Yeo3, Seonguk Kang4
1Department of Medical Informatics, School of Medicine, Kangwon National University, Chuncheon, Korea.
Journal of Korean medical science
|February 6, 2024
概括
机器学习模型使用临床数据准确预测败血症死亡率. 基线变量提供比顺序器官衰竭评估 (SOFA) 得分更好的早期预测,识别关键预测因素.
科学领域:
- 医疗信息学 医疗信息学
- 关键护理医学 关键护理医学
- 机器学习 机器学习
背景情况:
- 败血症是全球医院死亡的主要原因.
- 早期预测败血症死亡率对于有效的资源配置至关重要.
- 机器学习 (ML) 模型有可能改善败血症患者的早期死亡预测.
研究的目的:
- 构建和评估ML模型,以预测急诊室的败血症患者死亡率.
- 为了比较使用临床变量与SOFA组件的ML模型的预测性能.
- 确定影响败血症死亡率预测的关键临床变量.
主要方法:
- 在急诊室的败血症患者的前性多中心队列研究 (2019年9月 - 2020年12月).
- 六个ML模型 (逻辑回归,SVM,随机森林,XGBoost,LGBM,CatBoost) 通过五重交叉验证进行训练.
- 对比了44个基线临床变量与6个SOFA组件 (PF,PLT,胆红素,心血管,GCS,肌素) 进行死亡率预测.
主要成果:
- 使用临床变量,CatBoost获得了最高AUC (0.800);使用SOFA组件,XGBoost获得了最高AUC (0.678).
- 专,乳酸盐,血尿素和国际正常化比率显著影响了预测.
- PaO2 / FiO2 (PF) 和血小板 (PLT) 计数是SOFA相关的重要预测指标.
结论:
- ML模型在预测败血症死亡率方面表现良好.
- 基线临床变量提供比SOFA组件更准确的早期预测.
- 该研究确定了影响败血症死亡率预测的重要变量,有助于临床决策.
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