Table 1. Baseline characteristics between pyogenic liver abscess group and non-pyogenic liver abscess group.

Characteristic	Pyogenic liver abscess				P value
	No n = 123 464		Yes n = 30 866
	n	(%)	n	(%)
Sex					0.99
Male	77 016	62.4	19 254	62.4
Female	46 448	37.6	11 612	37.6
Age group (years)					0.99
20–39	11 125	9.0	2778	9.0
40–64	61 887	50.1	15 475	50.1
65–84	50 452	40.9	12 613	40.9
Age (years), mean (SD)a	60.0	14.3	60.2	14.1	<0.0001
Follow-up time (years), meana	4.81	4.54	3.86	3.21	<0.0001
Baseline comorbidities
Diabetes mellitus	8843	7.16	12 592	40.79	<0.0001
Hypertriglyceridemia	588	0.48	353	1.14	<0.0001
Biliary stones	2852	2.31	6261	20.28	<0.0001
Alcoholism	390	0.32	336	1.09	<0.0001
Hepatitis C	779	0.63	1161	3.76	<0.0001

SD, standard deviation.

Data are presented as the number of subjects in each group, with percentages given in parentheses or mean, with median given in parentheses.

Chi-square test and ^at-test comparing subjects with and without pyogenic liver abscess.