Table 2.

Summary and specific PCB congener levels within the Akwesasne Mohawk adolescent population (in ppb; n=151).

	MAWBs					YAWBs					p-value	% with increased levels (n)

	ROD^*	Mean	GM	SD	Max	ROD^*	Mean	GM	SD	Max
Σ16PCB50%^a,^b	-	0.77	0.70	0.371	2.71	-	0.50	0.46	0.287	2.66
Σ of 8 Persistent PCBs^a,^c	-	0.46	0.41	0.276	2.45	-	0.35	0.31	0.228	1.89	*0.001*	25(37)
Σ of 6 Non-persistent PCBs^a,^d	-	0.24	0.21	0.124	0.72	-	0.12	0.11	0.082	0.74	*0.001*	9 (14)
p,p′-DDE (ppb)^a	100 %	0.45	0.38	0.384	3.08	99%	0.39	0.33	0.237	1.61	*0.003*	34(52)
HCB (ppb)^a	99%	0.04	0.03	0.019	0.19	100%	0.04	0.03	0.015	0.11	0.37	44(67)

PCB IUPAC#^a
105	67%	0.03	0.03	0.015	0.10	86%	0.02	0.01	0.021	0.10	*0.010*	32(49)
118	99%	0.08	0.07	0.040	0.28	100%	0.05	0.04	0.042	0.42	*0.001*	23(34)
138 [+163+164]^e	89%	0.08	0.07	0.058	0.47	100%	0.07	0.06	0.050	0.41	*0.010*	36(54)
153	97%	0.11	0.09	0.101	0.98	98%	0.08	0.07	0.056	0.45	*0.001*	30(45)

ROD: Rates of detection as described in Schell et al. 2003, and Gallo et al. 2011

All values below the YAWBs mdl was replaced by the YAWBs mdl and all values below the MAWBs mdl were replaced by the MAWBs mdl

Congeners with ≥ 50% detection rate; Sum of IUPAC#s 52, 70, 74, 84, 87, 95, 99, 101[+90], 105, 110, 118, 138[+163+164], 149[+123], 153, 180, 187

Sum of IUPAC#s: 74, 99, 105, 118, 138[+163+164], 153, 180, 187

Sum of IUPAC#s: 52, 84, 95, 101[+90], 110, and 149[+123]

Bracket indicates ‘minor’ congener based on Aroclor concentration (Hansen, 1999).