四川精神卫生2026，Vol.39Issue(1)：27-35,9.DOI:10.11886/scjsws20250707001
基于支持向量机的住院精神分裂症患者暴力风险预测模型
Predictive modle for violence risk in hospitalized schizophrenia patients based on support vector machine
摘要
Abstract
Background The violent aggressive behaviors of patients with schizophrenia usually have the characteristics of suddenness,unpredictability,high severity,and great difficulty in prevention.Early identification and accurate assessment of their risk of violent aggression have significant clinical significance.Objective To construct a predictive model for the violence risk in hospitalized patients with schizophrenia,to identify the key factors influencing the occurrence of violent behavior in these patients,so as to provide references for clinical precise quantitative assessment and early intervention.Methods A total of 200 patients with schizophrenia who were hospitalized at Taiyuan Psychiatric Hospital from March 2022 to September 2024 and met the diagnostic criteria of the International Classification of Diseases,eleventh edition(ICD-11)were collected to form the modeling cohort.They were randomly divided into a training set(n=140)and a test set(n=60)at a ratio of 7∶3.Based on the least absolute shrinkage and selection operator(LASSO)regression algorithm,the feature variables were screened and dimension-reduced.The support vector machine(SVM)from machine learning was selected for model training and prediction.The discrimination efficacy of the model was evaluated by the area under the receiver operating characteristic(ROC)curve(AUC),accuracy,precision,sensitivity,specificity,F1 value,and Brier value.Results LASSO regression screening identified 16 feature variables.Pearson correlation analysis revealed a positive correlation between prior violent behavior frequency and clinical psychiatric symptom scores(r=0.580,P<0.01),a positive correlation between hospitalization compliance and current disease status(r=0.550,P=0.003),and a positive correlation between educational level and family per capita monthly income(r=0.367,P<0.01).The SVM model achieved an AUC of 0.853,accuracy of 0.800,precision of 0.810,sensitivity of 0.895,specificity of 0.636,F1 value of 0.850,and Brier value of 0.168.Conclusion The SVM model has a relatively high level of applicability and overall predictive performance in the assessment of violent risk in schizophrenia patients,which is helpful for the early identification of violent risks in such patients.关键词
LASSO回归/精神分裂症/暴力风险/预测模型Key words
LASSO regression/Schizophrenia/Violent risk/Prediction model分类
医药卫生引用本文复制引用
刘寰,师培芳,张坤,康莉,张燕,那龙,王斌红,和美清..基于支持向量机的住院精神分裂症患者暴力风险预测模型[J].四川精神卫生,2026,39(1):27-35,9.基金项目
太原市卫生健康人才能力提升专项行动科研项目(项目名称:基于机器学习算法的精神科暴力行为早期预警模型研究,项目编号:Y2023006) Funded by Specialized Research Project for Enhancing the Competence of Health Professionals in Taiyuan City(number,Y2023006) （项目名称:基于机器学习算法的精神科暴力行为早期预警模型研究,项目编号:Y2023006）
