BMC Cardiovascular Disorders

Table 3 Compare of risk discrimination of anion gap with simplified acute physiology score II

From: Association between anion gap and mortality of aortic aneurysm in intensive care unit after open surgery

Outcome	Continuous AG	SAPSII
Outcome	AUC (95% CI)	AUC (95% CI)	P value^a	NRI (95% CI)	P value^b	IDI (95%)	P value^c
In-ICU mortality	0.882(0.818–0.946)	0.839(0.771–0.908)	0.215	0.302(-0.074–0.677)	0.115	0.118(-0.013–0.249)	0.077
In-Hospital mortality	0.861(0.785–0.937)	0.833(0.767–0.899)	0.441	0.373(0.009–0.738)	0.045	0.110(-0.011–0.232)	0.076
90-day mortality	0.809(0.722–0.895)	0.801(0.730–0.872)	0.847	0.176(-0.158–0.511)	0.302	0.082(-0.014–0.179)	0.095
1-year mortality	0.775(0.700–0.850)	0.780(0.714–0.845)	0.878	0.304(0.007–0.601)	0.045	0.095(0.022–0.167)	0.01

a. For Delong’ test of two correlated ROC curves of AG and SAPSII
b. For NRI between AG model and SAPSII model
c. For IDI between AG model and SAPSII model
Abbreviation: AG, anion gap; SAPSII, simplified acute physiology score II; ICU, intensive care unit; AUC, area under the curve; NRI, net reclassification index; IDI, integrated discrimination improvement; ROC, receiver operating characteristic

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ISSN: 1471-2261

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