Associations between self-reported pest treatments and pesticide concentrations in carpet dust

Table 6 Expected probabilities ^a (exp) of herbicide use and observed ^b associations (obs) between dust concentrations and self-reported weed treatments

Herbicides	Weed treatment by household member/consumer		Weed treatment by professional
	Prob %	Obs ^c,d,e	Prob %	Obs ^c,d,e
2,4-D	≥20	+	≥20	–
Chlorthal	1-9		0
Dicamba	≥20	+	≥20
Mecoprop	≥20	+	10-19	–
Simazine	0		1-9

^aReflects probability of use of herbicide active ingredient based on NCI Pesticide Exposure Matrix [21].
^bObserved reflects statistical significance of association from multivariable regression models presented in Table 4.
^c +, positive association, 95% confidence interval (CI) does not include 1.
^d -, negative association, 95% CI does not include 1.
^eEmpty cell reflects no association, 95% CI includes 1.

ISSN: 1476-069X