Comparative analysis of APACHE-II and P-POSSUM scoring systems in predicting postoperative mortality in patients undergoing emergency laparotomy

Table 4 Discriminating ability of APACHE-II and P-POSSUM in predicting the secondary outcomes

		APACHE-II	P-POSSUM
LOS	R	0.322	0.374
	P value	< 0.001	< 0.001
Ventilatory support	R	0.554	0.572
	P value	< 0.001	< 0.001
Ionotropic support	R	0.573	0.544
	P value	< 0.001	< 0.001
Re-exploration	R	0.112	0.178
	P value	0.161	0.026
AMI or arrhythmia	R	0.507	0.518
	P value	< 0.001	< 0.001
AKI	R	0.507	0.518
	P value	< 0.001	< 0.001

APACHE-II: Acute physiology and chronic health evaluation II; P-POSSUM: Physiological and operative severity for the enumeration of mortality and morbidity; LOS: Length of stay; AKI: Acute kidney injury; AMI: Acute myocardial infarction.