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第45卷第6期 夏姚冬琴,焦锦程,曹月洲,等. 心脏生物标志物对卒中后死亡风险的预测价值[J].
2025年6月 南京医科大学学报(自然科学版),2025,45(6):844-853 ·849 ·
表2 AIS患者2年全因死亡风险多因素Cox回归分析结果
Table 2 Multivariable Cox regression analysis results of 2⁃year all⁃cause mortality risk in AIS patients
Basical model Model 1 Model 2
Characteristic
HR(95%CI) P C⁃index HR(95%CI) P C⁃index HR(95%CI) P C⁃index
0.789 0.835 0.781
History of AF 2.35(1.32-4.16) 0.003 1.89(1.06-3.36) 0.030 2.24(1.26-4.00) 0.006
Postoperative NIHSS 1.06(1.03-1.09) <0.001 1.06(1.03-1.10) <0.001 1.06(1.03-1.09)<0.001
Hemoglobin(10 g/L) 0.78(0.69-0.89) <0.001 0.79(0.69-0.91) <0.001 0.79(0.69-0.90)<0.001
WBC(×10 /L) 1.12(1.04-1.21) 0.004 1.14(1.05-1.23) <0.001 1.10(1.02-1.20) 0.017
9
Glucose(mmol/L) 1.12(1.02-1.24) 0.015 1.18(1.07-1.31) <0.001 1.13(1.03-1.25) 0.011
NT⁃proBNP(×10 pg/mL) - - 1.27(1.15-1.40) <0.001 - -
3
ln(hs⁃cTnT)(ng/L) - - - - 1.11(0.89-1.38) 0.372
Model 1:basic model plus NT⁃proBNP;Model 2:basic model plus hs⁃cTNT. AIS:acute ischemic stroke;AF:atrial fibrillation;NIHSS:National In⁃
stitutes of Health Stroke Scale;WBC:white blood count;NT⁃proBNP:N⁃terminal pro⁃brain natriuretic peptide;hs⁃cTnT:high⁃sensitivity cardiac troponin T.
A B
1.0 1.0
0.8 0.8
Sensitivity 0.6 Sensitivity 0.6
0.4
Basic model 0.4 Basic model
(AUC=0.816) (AUC=0.778)
0.2 Model 1 0.2 Model 1
(AUC=0.866) (AUC=0.799)
Model 2 Model 2
0 (AUC=0.811) 0 (AUC=0.788)
0 0.2 0.4 0.6 0.8 01.0 0 0.2 0.4 0.6 0.8 01.0
1-Specificity 1-Specificity
A:ROC curve of 2⁃year all⁃cause mortality risk prediction model in AIS patients of the training set(n=146). B:ROC curve of 2⁃year all⁃cause mor⁃
tality risk prediction model in AIS patients of the testing set(n=84). Model 1:basic model + NT⁃proBNP;Model 2:basic model + hs⁃cTnT.
图1 AIS患者2年全因死亡风险预测模型的ROC曲线
Figure 1 ROC curve of 2⁃year all⁃cause mortality risk prediction model in AIS patients
A B
1.0 1.0
0.8 0.8
Observed proportion 0.6 Basic model Observed proportion 0.6 Basic model
0.4
0.4
Model 1
Model 1
0.2 Brier score=0.153 0.2 Brier score=0.176
Brier score=0.137 Brier score=0.170
Model 2 Model 2
0 Brier score=0.161 0 Brier score=0.173
00 0.2 0.4 0.6 0.8 1.0 00 0.2 0.4 0.6 0.8 1.0
Predicted probability Predicted probability
A:Calibration curve of 2⁃year all⁃cause mortality risk prediction model in AIS patients of the training set(n=146). B:Calibration curve of 2⁃year all
⁃cause mortality risk prediction model in AIS patients of the testing set(n=84). Model 1:basic model+NT⁃proBNP;Model 2:basic model+hs⁃cTnT.
图2 AIS患者2年全因死亡风险预测模型的校准曲线
Figure 2 Calibration curve of 2⁃year all⁃cause mortality risk prediction model in AIS patients
于模型1构建的列线图,根据风险等级计算可得,低 4A 和 4B 分别展示了模型 1 在训练集和测试集中的
风险<85 分,中风险 85~106 分,高风险>106 分。图 风险分层Kaplan⁃Meier生存曲线。不同风险组间生

