Table 1. Socio-demographic characteristics and seroprevalence of Toxocara infection among clinically healthy individuals in Shandong Province, eastern China.

Characteristic	No. subjects tested	Prevalence (%)(95%CI)	OR (95%CI)	P value
Age groups
19 or less	133	15.04 (8.96–21.11)	Reference
20–29	585	11.45 (8.87–14.03)	0.731 (0.426–1.253)	0.2528
30–39	444	14.19 (10.94–17.44)	0.934 (0.542–1.611)	0.8068
40–49	181	10.50 (6.03–14.96)	0.663 (0.338–1.298)	0.2281
50–59	45	17.78 (6.61–28.95)	1.222 (0.497–3.005)	0.6625
≥60	43	23.26 (10.63–35.88)	1.712 (0.730–4.016)	0.2128
Gender
Male	475	7.16 (4.84–9.48)	Reference
Female	956	16.00 (13.68–18.33)	2.471 (1.674–3.648)	<0.0001
Ethnic groups
Ethnic Han	1368	13.23 (11.44–15.03)	Reference
Ethnic Korean	63	9.52 (2.28–16.77)	0.690 (0.293–1.624)	0.3933
Residence place
Qingdao	416	12.50 (9.32–15.68)	Reference
Weihai	1015	13.30 (11.21–15.39)	1.074 (0.762–1.512)	0.6833
Residence area
Urban	707	14.29 (11.71–16.87)	Reference
Suburban or rural	724	11.88 (9.52–14.24)	0.809 (0.594–1.101)	0.1768