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Table 1 Toxoplasmosis exposure by demographic characteristics in children from Wisconsin, United States 1997–1999 based on detection of pathogen-specific IgG antibodies

From: A sero-survey of toxoplasmosis in farm and non-farm children from Wisconsin, United States, 1997–1999

Factors No. positive Sero-prevalence (95% C.I.)a P-value
All participants 37/342 10.8% (7.7 – 14.6) --
Farm residence    <0.001
Yes 29/158 18.4% (12.7 – 25.3)
No 8/184 4.4% (1.9 – 8.4)  
Age (years)    0.145, 0.049b
2–5 4/75 5.3% (1.5 – 13.1)
6–10 9/91 9.9% (4.6 – 18.0)
>10 24/176 13.6% (8.9 – 19.6)  
Sex    0.230
Male 23/183 12.6% (8.1 – 18.3)  
Female 14/159 8.8% (4.9 – 14.3)  
  1. aObserved prevalence and 95% Exact binomial confidence interval.
  2. bChi-square test for trend.