Table 1.

Soil contamination by Toxocara eggs in the subdistricts and public schools in Nakhon Si Thammarat province in southern Thailand.

Study site	No. of soil samples	No. of positive samples	Rate of contamination (%)	95% CI	Fisher's exact test
Krung Ching					p=0.005
S1	10	2	20.0
S2	10	4	40.0
S3	10	2	20.0
Total	30	8	26.7	12.3, 45.9
Nopphitam
S4	10	2	20.0
S5	10	4	40.0
S6	10	2	20.0
S7	10	0	0.0
Total	40	8	20.0	9.1, 35.6
Na Reng
S8	10	0	0.0
S9	10	0	0.0
S10	10	0	0.0
Total	10	0	0.0	—
Karo
S11	10	4	40.0
S12	10	2	20.0
Total	20	6	30.0	11.9, 54.3
Overall	120	22	18.3	11.9, 26.4