Prevalence and Concentration

 

 

Correlation of Hair and Swept House Dust Concentration 4

Pesticide

Hair 1

Swept Dust 1

Comparing Prevalence 2

Comparing Concentration 3

Propoxur

20.1 (29.5)

11.6 (67.1)

<0.001

0.51

0.047 (p=0.23)

Transfluthrin

0.007 (79.3)

4.1 (39.6)

0.001

0.007

-0.017 (p=0.68)

Bioallethrin

13.1 (294.2)

22.9 (204.6)

<0.001

0.001

0.203 (p<0.001)

Cyfluthrin

0.009 (407.7)

4.1 (724.0)

0.001

0.002

0.076 (p=0.07)

Cypermethrin

1.3 (528.8)

6.3 (538.6)

<0.001

<0.001

0.171 (p<0.001)

1Values given are prevalence (%) and median concentration (ng/g) for positive samples
2Significance of McNemar test
3Significance of Wilcoxon Signed Ranks test
4Estimate and (significance) of Kendall’s Tau
Table 4: Prevalence (%) and median concentrations (ng/g) for positive samples of pesticides in paired children’s hair versus swept house dust (N=557).
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