Table 3.

Weighted quantile sum regression index weights^a estimated in the study population and in each study site.

Chemical	Detroit(p = 0.045)a	Iowa(p = 0.002)a	Los Angeles(p < 0.049)a	Seattle(p = 0.071)a	All sites(p = 0.006)a
PCB 105	0.01	0.07	0.03	0.01	0.02
PCB 138	< 0.005	0.01	0.01	< 0.005	< 0.005
PCB 153	< 0.005	0.01	0.12	0.07	0.02
PCB 170	0.17	0.01	0.01	0.01	0.03
PCB 180	0.18	0.02	0.01	0.14	0.32
Benz(a)anthracene	< 0.005	< 0.005	< 0.005	0.09	< 0.005
Benzo(b)fluoranthene	< 0.005	< 0.005	0.10	< 0.005	< 0.005
Benzo(k)fluoranthene	< 0.005	< 0.005	0.30	0.01	0.07
Benzo(a)pyrene	0.07	0.04	< 0.005	0.03	0.06
Chrysene	< 0.005	< 0.005	< 0.005	< 0.005	< 0.005
Dibenz(ah)anthracene	< 0.005	0.03	0.03	0.01	0.01
Indeno(1,2,3-cd)pyrene	0.03	< 0.005	< 0.005	< 0.005	< 0.005
α-chlordane	0.02	0.07	0.03	0.01	0.04
γ-chlordane	< 0.005	0.12	0.03	0.01	0.08
Carbaryl	0.01	< 0.005	0.03	0.01	0.01
Chlorpyrifos	0.01	0.02	< 0.005	< 0.005	< 0.005
cis-Permethrin	0.09	0.01	0.03	0.02	< 0.005
trans-Permethrin	0.06	< 0.005	0.01	0.09	0.03
2,4-D	0.05	< 0.005	0.11	< 0.005	< 0.005
DDE	< 0.005	0.11	0.07	0.14	0.08
DDT	0.01	< 0.005	0.01	0.01	< 0.005
Diazinon	0.01	< 0.005	< 0.005	0.02	< 0.005
Dicamba	0.09	< 0.005	0.06	< 0.005	< 0.005
Methoxychlor	0.12	0.01	< 0.005	< 0.005	< 0.005
o-Phenylphenol	< 0.005	0.11	< 0.005	0.06	0.04
Pentachlorophenol	< 0.005	0.06	< 0.005	0.09	0.01
Propoxur	0.05	0.30	0.01	0.16	0.17
ap-Value associated with the estimated weighted quantile sum regression index parameter as given in Table 2.