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表4 MELD、MELD⁃Na、MELD 3.0 评分对肝硬化患者 3月和1年预后的ROC曲线分析
Table 4 ROC curve analysis of MELD,MELD⁃Na,and MELD 3.0 scores for the prognosis of patients with liver cirrhosis at 3
month and 1 year
Variable AUROC(95% CI) Cutoff Sensitivity Specificity PPV NPV Z P * Power #
3⁃month
MELD 3.0 0.859(0.805-0.913) 18 82.35 82.97 47.1 96.2 NA NA NA
MELD⁃Na 0.857(0.802-0.912) 17 82.35 80.54 43.7 96.1 0.450 0.652 0.131
MELD 0.856(0.800-0.911) 17 79.41 85.14 49.5 95.7 0.567 0.571 0.241
1⁃year
MELD 3.0 0.841(0.796-0.886) 18 73.04 86.07 65.1 90.0 NA NA NA
MELD⁃Na 0.832(0.785-0.880) 16 75.65 82.97 61.3 90.5 1.338 0.181 0.964
MELD 0.830(0.782-0.878) 17 66.96 90.09 70.6 88.4 1.421 0.155 0.996
*Comparison of the AUROC of the prognostic model against MELD3.0 was performed using DeLong’s test. Statistical significance at P < 0.05;#
The power analysis for comparing AUC differences between MELD 3.0 and other models(MELD⁃Na and MELD). AUROC:area under the receiver oper⁃
ating characteristic curve;CI:confidence interval;MELD,model for end⁃stage liver disease;NPV:negative predictive value;PPV:positive predictive
value;NA,not applicable.
(%) 100 MELD 3.0 (%) 100 MELD 3.0
A B
Observed survival frequencies 50 MELD⁃Na Observed survival frequencies 50 MELD⁃Na
75
75
MELD
MELD
25
25
0
0 25 50 75 100 0 0 25 50 75 100
Predicted survival probability(%) Predicted survival probability(%)
A:Calibration curves for MELD 3.0,MELD⁃Na,and MELD scores predicting 3⁃month mortality. B:Calibration curves for MELD 3.0,MELD⁃Na,
and MELD scores predicting 1⁃year mortality.
图2 3种评分预测3月和1年死亡的校准曲线
Figure 2 Calibration curves of the three scoring systems for predicting 3⁃month and 1⁃year mortality
表5 MELD、MELD⁃Na、MELD 3.0 评分对肝硬化患者 3月和1年预后的NRI和IDI分析
Table 5 NRI and IDI analysis of MELD,MELD⁃Na,and MELD 3.0 scores for the prognosis of patients with liver cirrhosis at
3 month and 1 year
Variable NRI 95% CI P IDI 95% CI P
3⁃month
MELD 3.0 vs. MELD⁃Na -0.091 -0.365-0.097 0.315 -0.014 -0.037-0.007 0.196
MELD 3.0 vs. MELD 0.240 0.009-0.401 0.032 0.016 -0.007-0.039 0.200
1⁃year
MELD 3.0 vs. MELD⁃Na 0.047 -0.007-0.176 0.862 0.002 -0.008-0.011 0.545
MELD 3.0 vs. MELD 0.201 0.079-0.401 <0.001 0.032 0.006-0.057 0.020
3.0的AUC值在大部分分组患者中略高于MELD⁃Na 力、AUC 分别为 0.859(0.805~0.913)和 0.841(0.796~
和MELD评分,但差异无统计学意义(P > 0.05,表6)。 0.886),但和 MELD⁃Na、MELD 评分比较,差异无统
计学意义(P > 0.05)。对肝硬化人群重新分类中,
3 讨 论
MELD 3.0 评分能将 18.0%的 MELD⁃Na 评分患者的
本研究发现MELD 3. 0评分预测肝硬化失代偿 评分区间上调,21.5%的MELD评分患者被重新归类
期患者的 3 个月和 1 年的死亡具有较高的区分能 为较高区间的评分。在预测 3 个月死亡率上,

