Table 4.

Univariate analysis of the predictors of abscess and/or perforation

Variable		P value	Odds ratio	95% confidence interval
PCT	<0.46		1 (reference)
	≥0.46	<0.0001	30.3	6.5–140.5
BT	<37.6		1 (reference)
	≥37.6	0.0062	5.7	1.6–19.8
WBC	<16700		1 (reference)
	≥16700	0.242	2.2	0.6–7.9
N/L ratio	<7.3		1 (reference)
	≥7.3	0.0511	3.3	1.00–11.0
CRP	<6.7		1 (reference)
	≥6.7	0.001	10.8	2.6–44.4