Table 1.

Demographics of the study population and seroprevalence of Toxoplasma gondii infection

Variable	Cases with liver diseases (n = 1142)			Control group (n = 1142)
	No. tested	No. positive	Prevalence (%)	No. tested	No. positive	Prevalence (%)	P-value
Age group (years)							0·10
30 or less	103	23	22·33	254	40	15·75
31–40	153	29	18·95	169	16	9·47
41–50	309	74	23·95	297	38	12·79
51–60	243	38	15·64	150	13	8·67
61–70	190	36	18·95	132	17	12·88
>70	144	33	22·92	140	26	18·57
Gender							0·008
Male	595	114	19·16	532	67	12·59
Female	547	119	21·76	610	83	13·61
Geographic region							<0·001
Qingdao	395	87	22·03	382	44	11·52
Weihai	349	95	27·22	494	67	13·56
Zhengzhou	398	51	12·81	266	39	14·66
Residence area							0·71
Urban	532	108	20·30	649	66	10·17
Rural	610	125	20·49	493	84	17·04