摘要：Objectives:Unplanned readmissions severely affect a patient's physical and mental well-being after kidney transplantation(KT),which is also independently associated with morbidity.A retrospective study was conducted to identify the incidence,causes and risk factors for unplanned readmission after KT among Chinese ***:Patients who underwent KT were admitted to the organ transplant center of the Affiliated Hospital of University of Science and Technology of China(2017-2018).Medical records for these patients were obtained through the hospital information system(HIS).Results:In 518 patients,the incidence of unplanned readmissions within 30 days(n=9)was 1.74%,and 90 days(n=64)was 12.35%.The one-year unplanned readmission rate was 22.59%(n=122).Overall,122 patients were readmitted because of infection,renal events,metabolic disturbances,surgical complications,***(OR=10.462,95%CI:1.355-80.748),peritoneal dialysis(OR=8.746,95%CI:1.074-71.238)and length of stay(OR=1.023,95%CI:1.006-1.040)were independent risk factors for unplanned ***:Unplanned readmission rates increased with time after *** risk factors related to unplanned readmissions should be deeply *** interventions for controllable factors to alleviate the rate of unplanned readmissions should be identified.

摘要：为准确、有效地对EPC工程项目安全风险进行评价,降低工程事故发生率,应用支持向量机(SVM)算法评价EPC项目安全风险。首先,根据EPC工程总承包模式的特点及相关文献、资料定性分析EPC项目设计、采购及施工阶段安全风险因素,建立EPC项目安全风险评价指标体系;其次,将SVM算法运用于安全风险评价,构建基于SVM的EPC项目安全风险评价模型;最后,选取武汉市的20个典型EPC项目,利用所建立的SVM模型对其进行安全风险评价。结果显示预测准确度为87.5%,模型预测效果较好。