Predictive factors for liver abscess liquefaction degree based on clinical, laboratory, and computed tomography data

Table 2 Comparison of patient computed tomography characteristics, n (%)

CT features	PL (n = 28)	WL (n = 82)	Univariate analysis		Multivariate analysis
			Z value	P value	P value	OR (95%CI)
Lesion volume (cm³), median (25th, 75th percentiles)	110.45 (89.16, 207.13)	88.48 (37.68, 164.03)	-2.107	0.035a	0.919	1.00 (1.00-1.00)
Mean CT value (HU), median (25th, 75th percentiles)	25.10 (19.93, 29.47)	23.04 (17.50, 27.19)	-1.496	0.135
Median CT value (HU), median (25th, 75th percentiles)	26.00 (21.00, 29.75)	23.00 (19.00, 27.00)	-1.506	0.132
10% CT value (HU), median (25th, 75th percentiles)	6.50 (-2.75, 10.75)	3.50 (-3.50, 10.00)	-0.666	0.505
90% CT value (HU), median (25th, 75th percentiles)	44.00 (39.50, 49.75)	43.00 (38.00, 49.25)	-0.721	0.471
CT value range (HU), median (25th, 75th percentiles)	38.50 (28.00, 51.00)	37.50 (29.75, 51.00)	-0.779	0.436
Maximum cross-sectional diameter (cm), median (25th, 75th percentiles)	7.50 (6.57, 8.79)	7.23 (5.42, 9.31)	-1.118	0.263
Maximum 3D diameter (cm), median (25th, 75th percentiles)	8.32 (7.46, 10.43)	8.23 (6.33, 10.41)	-0.837	0.403
Abscess location (left lobe)	3 (10.7)	50 (61.0)	-2.764	0.005a	0.041a	4.305 (1.065-17.404)
Presence of gas	4 (14.3)	17 (20.3)	0.746	0.454
Cystic appearance	3 (10.7)	28 (34.1)	2.369	0.017a	0.028a	5.037 (1.187-21.378)

^aP < 0.05.

PL: Poor liquefaction; WL: Well liquefaction; OR: Odds ratio; CI: Confidence interval; CT: Computed tomography; HU: Hounsfield unit; 3D: Three dimensional.