Table 4.

Multivariable analysis of presence versus absence of HAEC episodes.

Variable	Parameter estimate	Assigned point	Odds ratio (95% CI)	P-value
Diarrhea with explosive stool
Yes	3.4367	5	31.09 (5.11–346.27)	<.001
No	Reference	0
Decreased peripheral perfusion
Yes	3.3261	5	27.83 (1.13–4393.16)	0.042
No	Reference	0
Lethargy
Yes	3.3177	5	27.60 (1.71–4281.63)	0.016
No	Reference	0
Dilated loops of bowel on AXR
Yes	2.6803	4	14.59 (2.55–102.61)	0.003
No	Reference	0

One hundred sixteen observations were used in the multivariable model. Fourteen criteria not shown were dropped out of the model. Firth’s penalized maximum likelihood estimation along with profile-likelihood confidence interval and p-value from penalized likelihood ratio test [10,11] was reported since quasi-complete separation of data points was detected and the maximum likelihood estimate may not exist.