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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.