Table 1.

Seroprevalence of T. gondii infection in children with lymphoma and control subjects in eastern China

		Children with lymphoma(N = 314)			Controls (N = 314)
Variable	Prevalence of T. gondii infection				Prevalence of T. gondii infection
	No. tested	No. positive	%	P	No. tested	No. positive	%	P
Age (years)
⩽2	47	7	14.9	Reference	50	0	0.0	Reference
3–6	123	21	17.1	0.73	122	14	11.5	0.011a
7–10	94	21	22.3	0.29	88	10	11.4	0.014a
11–14	50	13	26.0	0.18	54	7	13.0	0.013
Gender
Male	116	25	21.6	0.54	124	13	10.5	0.77
Female	198	37	18.7		190	18	9.5
Residence area
Urban	140	28	20.0	0.92	231	25	10.8	0.35
Rural	174	34	19.5		83	6	7.2
Contact with cats
Yes	129	36	27.9	0.002	118	18	15.3	0.01
No	185	26	14.1		196	13	6.6
Contact with dogs
Yes	88	16	18.2	0.66	52	5	9.6	0.95
No	226	46	20.3		262	26	9.9
Contact with swine
Yes	51	7	13.7	0.24	42	4	9.5	0.98a
No	263	55	20.9		272	27	9.9
Consumption of raw/undercooked meat
Yes	47	10	21.3	0.78	66	4	6.1	0.24
No	267	52	19.5		248	27	10.9
Consumption of raw vegetables
Yes	249	50	20.1	0.77	218	22	10.1	0.84
No	65	12	18.5		96	9	9.4
Consumption of oysters
Yes	187	44	23.5	0.04	177	23	13.0	0.04
No	127	18	14.2		137	8	5.8
Source of drinking water
Tap	225	47	20.9	0.42	227	23	10.1	0.80a
Well + river	89	15	16.9		87	8	9.2
Parent's occupation
Farmer	168	34	20.2	0.81	150	18	12.0	0.23a
Worker	146	28	19.2		164	13	7.9
Infection status of mothers during pregnancy
Yes	16	3	18.8	0.73a	44	6	13.6	0.57
No	115	19	16.5		68	12	17.7
Unknown	183				202
Blood transfusion history
Yes	207	40	19.3	0.79
No	107	22	20.6
Chemotherapy history
Yes	216	52	24.1	0.004
No	98	10	10.2

^aFisher's exact test was used.