2.

4种评分系统ROC曲线下比较及差异性分析

Comparison of the AUCs of the 4 scoring systems (Z test)

Score	Compare	SE	Z	P	95%cl
SOFA: Sequential organ failure assessment; SAPS-Ⅱ: Simplified Acute Physiology Score Ⅱ; OASIS: Oxford Acute Severity of Illness Score; LODS: Logistic Organ Dysfunction System; SE: Standard error; CI: Confidence interval.
SOFA
	SAPS-Ⅱ	0.011	3.679	< 0.001	0.019-0.061
	OASIS	0.013	2.172	0.030	0.003-0.055
	w LODS	0.010	1.057	0.291	-0.009-0.029
SAPS-Ⅱ
	w SOFA	0.011	3.679	< 0.001	0.019-0.061
	vs OASIS	0.010	1.102	0.271	-0.008-0.030
	w LODS	0.008	3.698	< 0.001	0.014-0.045
OASIS
	vs SOFA	0.013	2.172	0.030	0.003-0.055
	vs SAPS-Ⅱ	0.010	1.102	0.271	-0.008-0.030
	vs LODS	0.011	1.709	0.088	-0.003-0.040
LODS
	vs SOFA	0.010	1.057	0.291	-0.009-0.029
	vs SAPS-Ⅱ	0.008	3.698	< 0.001	0.014-0.045
	vs OASIS	0.011	1.709	0.088	-0.003-0.040