The gains in analyzing death from a multiple cause perspective have been recognized for a very long time. Methods that have been adopted have sought to determine additional gains made by treating death as a multiple c...The gains in analyzing death from a multiple cause perspective have been recognized for a very long time. Methods that have been adopted have sought to determine additional gains made by treating death as a multiple cause phenomenon as compared to analysis based on a single under-lying cause. This paper shows how association rules mining methodology can be adapted to determine joint morbid causes with strong and interesting associations. Results show that some causes of death that do not appear among the leading causes show strong associations with other causes that would otherwise remain unknown without the use of association rules methodology. Overall, the study found that the leading joint pair of causes of death in South Africa was metabolic disorders and intestinal infectious diseases which accounted for 18.9 deaths per 1000 in 2008, followed by cerebrovascular and hypertensive diseases which accounted for 18.3 deaths per 1000.展开更多
背景随着人口老龄化的加剧,心力衰竭(heart failure,HF)患病率呈上升趋势,老年心力衰竭的预警、风险分层研究对改善预后具有重要意义。目的探讨血尿素氮-白蛋白比值(blood urea nitrogen to albumin ratio,BAR)对老年心力衰竭患者1年内...背景随着人口老龄化的加剧,心力衰竭(heart failure,HF)患病率呈上升趋势,老年心力衰竭的预警、风险分层研究对改善预后具有重要意义。目的探讨血尿素氮-白蛋白比值(blood urea nitrogen to albumin ratio,BAR)对老年心力衰竭患者1年内死亡的预测价值;建立包含BAR在内的列线图,并验证其临床价值。方法建模数据来自解放军总医院2016年1月—2021年10月诊断为心力衰竭的1259例老年患者,验证队列来自2021年10月—2022年10月诊断为心力衰竭的314例老年患者。以1年病死率为结局指标,采用Logistic回归分析筛选预后因素,根据预后因素构建列线图;ROC曲线、校准曲线和临床决策曲线分析(decision curve analysis,DCA)用于评估模型的区分度、一致性和临床效益;通过计算ROC曲线下面积和DCA,比较列线图与N端脑钠肽前体(N-terminal pro-B-type natriureticpeptide,NT-proBNP)及BIOSTATCHF预测模型的性能。结果训练队列和验证队列中分别有27.2%(343/1259)和25.2%(79/314)患者在1年内死亡。多因素Logistic回归结果显示,年龄、D-二聚体、NT-proBNP、BAR、血管紧张素转化酶抑制剂(angiotensin converting enzyme inhibitor,ACEI)/血管紧张素受体阻滞剂(angiotensin receptor blockers,ARB)使用与死亡结局独立关联(P<0.05)。基于以上5个因素构建列线图,列线图展现出良好的区分度(AUC=0.838,P<0.001)、一致性(Hosmer-Lemeshowχ2=4.251,P=0.834)和临床效益。列线图模型与NT-proBNP和欧洲BIOSTAT-CHF预测模型相比预测效能均更佳(0.838 vs 0.703和0.825,P<0.05)。DCA结果提示,列线图相比NT-proBNP、BIOSTAT-CHF预测模型均增加了更多的净获益。结论BAR是老年心力衰竭患者1年内死亡的独立预测因子。包含BAR在内的列线图展现出优异的辨别力和校准能力,为预后评估提供有力支持。展开更多
目的探讨超敏C反应蛋白与白蛋白比值(hypersensitive C reactive protein to albumin ratio,CAR)与维持性血液透析(maintenance hemodialysis,MHD)患者腹主动脉钙化及全因死亡的相关性。方法选择2023年1月─2024年2月在首都医科大学附...目的探讨超敏C反应蛋白与白蛋白比值(hypersensitive C reactive protein to albumin ratio,CAR)与维持性血液透析(maintenance hemodialysis,MHD)患者腹主动脉钙化及全因死亡的相关性。方法选择2023年1月─2024年2月在首都医科大学附属北京潞河医院血液净化中心进行治疗的MHD患者为研究对象。收集符合纳入标准的患者的基本信息、规律透析治疗3个月后的生化指标、腹主动脉钙化及全因死亡情况。分析CAR与腹主动脉钙化的相关性,采用受试者工作曲线(ROC)分析CAR对腹主动脉钙化的诊断价值,采用Logistic回归分析CAR与全因死亡的关系。结果共纳入204例患者,其中腹主动脉钙化患者155例(75.98%),死亡患者11例(5.39%)。腹主动脉钙化组患者CAR高于非钙化组(Z=3.105,P=0.002)。Spearman相关性分析显示CAR与腹主动脉钙化呈正相关(r=0.218,P=0.002)。CAR诊断腹主动脉钙化的cutoff值为0.02 mg/g,敏感性为92.9%,特异性为36.7%,曲线下面积为0.647(95%CI:0.554~0.741,P=0.002)。Logistic回归分析显示年龄、透析龄、HbAlc是腹主动脉钙化的独立危险因素(OR=1.074、1.015、1.881,95%CI:1.040~1.110、1.007~1.024、1.188~2.978,P<0.001、<0.001、0.001),CAR是全因死亡的独立危险因素(OR=5.393,95%CI:1.089~26.699,P=0.039)。结论CAR与腹主动脉钙化呈正相关,CAR有助于腹主动脉钙化的诊断,且CAR是全因死亡的独立危险因素。展开更多
文摘The gains in analyzing death from a multiple cause perspective have been recognized for a very long time. Methods that have been adopted have sought to determine additional gains made by treating death as a multiple cause phenomenon as compared to analysis based on a single under-lying cause. This paper shows how association rules mining methodology can be adapted to determine joint morbid causes with strong and interesting associations. Results show that some causes of death that do not appear among the leading causes show strong associations with other causes that would otherwise remain unknown without the use of association rules methodology. Overall, the study found that the leading joint pair of causes of death in South Africa was metabolic disorders and intestinal infectious diseases which accounted for 18.9 deaths per 1000 in 2008, followed by cerebrovascular and hypertensive diseases which accounted for 18.3 deaths per 1000.
文摘目的探讨超敏C反应蛋白与白蛋白比值(hypersensitive C reactive protein to albumin ratio,CAR)与维持性血液透析(maintenance hemodialysis,MHD)患者腹主动脉钙化及全因死亡的相关性。方法选择2023年1月─2024年2月在首都医科大学附属北京潞河医院血液净化中心进行治疗的MHD患者为研究对象。收集符合纳入标准的患者的基本信息、规律透析治疗3个月后的生化指标、腹主动脉钙化及全因死亡情况。分析CAR与腹主动脉钙化的相关性,采用受试者工作曲线(ROC)分析CAR对腹主动脉钙化的诊断价值,采用Logistic回归分析CAR与全因死亡的关系。结果共纳入204例患者,其中腹主动脉钙化患者155例(75.98%),死亡患者11例(5.39%)。腹主动脉钙化组患者CAR高于非钙化组(Z=3.105,P=0.002)。Spearman相关性分析显示CAR与腹主动脉钙化呈正相关(r=0.218,P=0.002)。CAR诊断腹主动脉钙化的cutoff值为0.02 mg/g,敏感性为92.9%,特异性为36.7%,曲线下面积为0.647(95%CI:0.554~0.741,P=0.002)。Logistic回归分析显示年龄、透析龄、HbAlc是腹主动脉钙化的独立危险因素(OR=1.074、1.015、1.881,95%CI:1.040~1.110、1.007~1.024、1.188~2.978,P<0.001、<0.001、0.001),CAR是全因死亡的独立危险因素(OR=5.393,95%CI:1.089~26.699,P=0.039)。结论CAR与腹主动脉钙化呈正相关,CAR有助于腹主动脉钙化的诊断,且CAR是全因死亡的独立危险因素。