Table 6.

Effect of the risk score derived from the model with 4 criteria on predicting the presence versus absence of HAEC episodes.

Risk score*	Number of patients (%)	Odds ratio (95% CI)	P-value
Risk score	116	2.26 (1.63–3.14)	<.001
Risk score > = 4 (i.e., those who have any of the 4 criteria)	40 (34.48)	143.88 (34.02–608.49)	<.001
Risk score < 4 (i.e., those who have none of the 4 criteria)	76 (65.52)	1 (Reference)

^*Risk score = 5 × diarrhea with explosive stool (1 if presence; 0 if absence) + 5 × decreased peripheral perfusion (1 if presence; 0 if absence) + 5 × lethargy (1 if presence; 0 if absence) + 4 × dilated loops of bowel on AXR (1 if presence; 0 if absence).