Table 6.

Results of bivariate correlations between each cognitive score and PCB groupings and PCB congeners found in 50% or more of the sample.

	RPM (n=268)		VMIS (n=269)		NMIS (n=269)		DRIS (n=269)		CMIS (n=269)		BCAE (n=236)		LTR (n=269)		STM (n=266)		PSD (n=268)		APG (n=263)		VPG (n=269)		CKN (n=250)		FRG (n=258)
PCBs (ppb)	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p	r	p
ΣDioxin-like PCBs50%a,c	−0.11	0.07	0.03	0.61	−0.01	0.85	−0.03	0.65	0.02	0.78	−0.01	0.93	−0.05	0.40	0.08	0.17	−0.04	0.50	−0.04	0.54	−0.04	0.49	−0.03	0.62	0.01	0.86
ΣDioxin-like PCBs10%b,d	−0.13	0.03	0.03	0.61	−0.03	0.57	−0.05	0.39	0.00	0.96	0.00	0.97	−0.07	0.23	0.10	0.10	−0.05	0.43	−0.03	0.63	−0.02	0.70	−0.01	0.93	0.01	0.92
ΣNondioxin-like PCBs50%a,e	−0.03	0.67	−0.02	0.70	−0.03	0.64	−0.11	0.08	−0.03	0.64	0.00	0.96	−0.15	0.02	0.08	0.19	−0.06	0.35	−0.03	0.61	−0.03	0.65	−0.01	0.92	0.03	0.60
ΣNondioxin-like PCBs10%b,f	−0.04	0.48	0.01	0.88	−0.04	0.52	−0.11	0.08	−0.02	0.80	0.02	0.72	−0.11	0.06	0.11	0.07	−0.01	0.83	−0.03	0.58	−0.02	0.77	0.00	0.96	0.03	0.60
ΣPersistent PCBs50%a,g	−0.04	0.56	−0.04	0.50	−0.03	0.63	−0.11	0.08	−0.04	0.51	0.00	0.99	−0.11	0.07	0.08	0.21	−0.08	0.18	−0.06	0.35	−0.01	0.86	0.02	0.74	0.04	0.48
ΣPersistent PCBs10%b,h	−0.05	0.39	−0.02	0.77	−0.04	0.50	−0.12	0.06	−0.03	0.59	0.02	0.80	−0.09	0.13	0.10	0.10	−0.05	0.42	−0.07	0.29	0.01	0.88	0.02	0.78	0.04	0.51
ΣLow-persistent PCBs50%a,i	−0.03	0.66	0.02	0.70	−0.02	0.79	−0.06	0.36	0.01	0.88	−0.01	0.88	−0.14	0.02	0.08	0.20	0.00	0.98	0.00	0.97	−0.06	0.37	−0.07	0.29	0.02	0.78
ΣLow-persistent PCBs10%b,j	−0.05	0.42	0.03	0.59	−0.05	0.44	−0.08	0.18	−0.01	0.93	0.01	0.83	−0.12	0.06	0.10	0.11	0.03	0.67	−0.01	0.87	−0.05	0.42	−0.04	0.52	0.02	0.80
PCB IUPAC#
118	−0.09	0.14	0.03	0.59	0.02	0.77	−0.01	0.88	0.04	0.57	0.01	0.91	−0.03	0.61	0.07	0.23	−0.04	0.54	−0.06	0.30	−0.04	0.56	−0.02	0.71	0.05	0.40
101[+90]k	−0.04	0.55	0.00	0.97	0.00	0.94	−0.06	0.29	0.00	0.94	−0.02	0.78	−0.13	0.04	0.05	0.43	0.01	0.92	0.00	0.97	−0.05	0.46	−0.08	0.23	0.00	0.99
153	0.02	0.73	−0.05	0.39	−0.02	0.76	−0.15	0.01	−0.04	0.48	−0.03	0.65	−0.11	0.06	0.06	0.29	−0.08	0.21	−0.07	0.28	−0.03	0.61	−0.01	0.82	0.05	0.46
110	0.00	0.94	0.01	0.89	0.00	0.96	−0.04	0.55	0.01	0.88	−0.04	0.58	−0.14	0.02	0.04	0.47	−0.03	0.65	−0.03	0.66	−0.03	0.60	−0.07	0.29	0.00	0.94
99	0.04	0.48	−0.01	0.86	0.01	0.90	−0.04	0.51	0.00	1.00	−0.02	0.79	−0.12	0.04	0.00	0.96	−0.04	0.46	−0.05	0.43	0.02	0.80	−0.03	0.66	0.09	0.17
87	−0.01	0.81	0.05	0.46	0.01	0.85	−0.02	0.70	0.04	0.52	0.01	0.89	−0.13	0.04	0.12	0.05	−0.02	0.79	0.03	0.63	−0.07	0.22	−0.06	0.37	0.02	0.71
138[+163+164]k	−0.02	0.76	−0.03	0.65	0.00	0.97	−0.04	0.52	−0.02	0.75	0.05	0.49	−0.13	0.03	0.10	0.11	−0.08	0.19	0.08	0.22	0.01	0.92	0.06	0.32	0.03	0.60
180	−0.03	0.68	−0.08	0.20	−0.07	0.26	−0.09	0.16	−0.08	0.17	0.02	0.77	−0.09	0.16	0.04	0.50	−0.09	0.14	−0.06	0.33	0.02	0.72	0.08	0.23	0.01	0.85
95	−0.07	0.25	0.02	0.71	−0.04	0.47	−0.05	0.38	−0.01	0.88	0.00	0.99	−0.11	0.08	0.06	0.31	0.01	0.83	0.06	0.33	−0.04	0.55	−0.06	0.37	0.01	0.88
52	−0.06	0.32	0.01	0.81	−0.04	0.47	−0.07	0.28	−0.02	0.79	0.03	0.60	−0.11	0.07	0.07	0.24	0.03	0.68	−0.03	0.62	−0.06	0.31	−0.02	0.73	0.03	0.66
74	−0.08	0.20	0.00	0.96	−0.01	0.83	−0.07	0.23	−0.01	0.92	0.01	0.85	−0.05	0.44	0.06	0.34	−0.06	0.30	−0.07	0.25	0.03	0.64	0.07	0.24	0.05	0.44
105	−0.16	0.01	−0.01	0.91	−0.09	0.16	−0.03	0.58	−0.05	0.40	−0.04	0.56	−0.01	0.88	0.05	0.38	−0.08	0.18	−0.07	0.29	−0.02	0.75	−0.03	0.66	−0.04	0.55
149[+123]k	−0.08	0.17	0.02	0.72	0.00	0.98	−0.06	0.35	0.02	0.80	−0.03	0.62	−0.13	0.04	0.05	0.37	0.02	0.70	0.06	0.32	−0.07	0.23	−0.07	0.28	−0.08	0.22
187	−0.04	0.48	−0.06	0.36	−0.10	0.11	−0.14	0.02	−0.09	0.13	−0.05	0.47	−0.05	0.38	0.01	0.91	−0.09	0.15	−0.12	0.05	0.01	0.90	−0.04	0.57	−0.06	0.36
70	−0.02	0.73	0.06	0.36	−0.03	0.61	−0.06	0.33	0.02	0.76	0.01	0.85	−0.09	0.13	0.11	0.07	0.01	0.91	0.02	0.77	−0.03	0.65	−0.05	0.39	0.03	0.65
84	0.02	0.73	0.02	0.70	−0.04	0.56	−0.04	0.53	0.00	0.98	−0.02	0.77	−0.14	0.03	0.09	0.15	0.01	0.84	0.04	0.54	−0.07	0.28	−0.03	0.69	−0.02	0.73

Abbreviations: RPM= Ravens Progressive Matrices; VMIS = TOMAL Verbal Memory Index; NMIS= TOMAL Non-verbal Memory Index; DRIS = TOMAL Delayed Recall Index; CMIS = TOMAL Composite Memory Index; BCAE = WJ-R Broad Cognitive Ability Extended; LTR = WJ-R Long Term Retrieval; STM = WJ-R Short Term Memory; PSD = WJ-R Processing Speed; APG = WJ-R Auditory Processing; VPG = WJ-R Visual Processing; CKN = WJ-R Comprehension-knowledge; FRG = WJ-R Fluid Reasoning.

Bold denotes p<0.05.

^*Only those congeners that were found to be significantly correlated with the outcome variables are shown in the detected in <50% or >10% group.

^aValues below the mdl were calculated following the EPA recommended method for estimating non-detected values as described in Schell et al., 2003.

^bValues below the detection limit have been replaced by the value midway between the detection limit and zero.

^cΣDioxin-like congeners in >50% of the sample= IUPAC#s 105,118,149[+123].

^dΣDioxin-like congeners in >10% of the sample= IUPAC#s 77,105,118,149[+123],156.

^eΣNondioxin-like congeners in >50% of the sample = IUPAC#s 52,70,84,74,87,95,99,101[+90],110,138[+163+164],153,180,187.

^fΣNondioxin-like congeners in >10% of the sample = IUPAC#s 52,70,84,74,87,95,99,101[+90],110,138[+163+164],153,180,187,132,146,158,170,183,199,28,31,44,47[+59],66,130,141,151,174,177,18,196,29,33,8,92,97,128,144,15,172,176,190,203,24[+27],40,42,49,53,56,71.

^gΣPersistent PCBs detected in >50% of the sample = IUPAC#s 74,99,105,118,138[+163+164],153,180,187

^hΣPersistent PCBs detected in >10% of the sample = IUPAC#s 74,99,105,118,138[+163+164],153,180,187,47[+59],28,66,77,130,158,199,128,146,156,170,172,177,183,190,196,203.

ⁱΣLowPersistent PCBs detected in >50% of the sample = IUPAC#s 52,70,84,95,110,101[+90],87.

^jΣLowPersistent PCBs detected in >10% of the sample = IUPAC#s 52,70,84,95,110,101[+90],87,8,18,29,31,33,40,42,44,49,53,56,71,92,97,132,141,144,151,174,176,24[+27],15.

^kBracket indicates 'minor' congener based on aroclor concentration (Frame, 1997).