Table 1.

Dioxin concentrations in maternal breast milk stratified by child’s sex

		Samples with	Boys			Girls
	LOD	below LOD	(N = 106)			(N = 79)
	(ppt)	N (%)	Median	GM	GSD	Median	GM	GSD
PCDD congeners (pg/g lipid)
2,3,7,8-TetraCDD	0.004	11 (5.9)	1.5	1.3	2.1	1.7	1.4	2.6
1,2,3,7,8-PentaCDD	0.011	0	4.2	4.3	1.6	4.5	4.1	1.7
1,2,3,4,7,8-HexaCDD	0.004	0	2.2	2.3	1.6	2.4	2.3	1.7
1,2,3,6,7,8-HexaCDD	0.01	0	8.3	8.2	1.6	8.4	8.2	1.8
1,2,3,7,8,9-HexaCDD	0.008	0	2.5	2.6	1.6	2.7	2.7	1.7
1,2,3,4,6,7,8-HeptaCDD	0.008	0	12.1	12.0	1.5	11.4	12.1	1.6
OctaCDD	0.008	0	63.9	67.7	1.5	68.1	67.7	1.6
PCDF congeners (pg/g lipid)
2,3,7,8-TetraCDF	0.005	13 (7.0)	0.5	0.5	2.0	0.6	0.5	2.2
1,2,3,7,8-PentaCDF	0.006	0	1.2	1.2	1.7	1.3	1.2	2.1
2,3,4,7,8-PentaCDF	0.01	0	7.2	7.1	1.5	8.1	7.2	1.7
1,2,3,4,7,8-HexaCDF	0.008	0	16.5	16.7	1.6	19.9	18.0	1.9
1,2,3,6,7,8-HexaCDF	0.003	0	10.8	10.2	1.6	12.0	11.1	1.9
1,2,3,7,8,9-HexaCDF	0.004	12 (13.5)	0.2	0.2	2.2	0.3	0.3	2.7
2,3,4,6,7,8-HexaCDF	0.006	0	1.3	1.2	1.5	1.5	1.4	1.9
1,2,3,4,6,7,8-HeptaCDF	0.01	0	10.8	11.6	1.6	13.5	12.9	2.0
1,2,3,4,7,8,9-HeptaCDF	0.004	3 (1.6)	1.2	1.1	1.9	1.6	1.2	2.7
OctaCDF	0.013	47 (25.4)	0.5	0.6	2.4	0.5	0.6	2.6
TEQs (pg-TEQ/g lipid)
TEQ-PCDDs			7.4	7.3	1.6	8.0	7.3	1.8
TEQ-PCDFs			5.2	5.3	1.5	5.7	5.6	1.8
TEQ-PCDDs/Fs			12.5	12.6	1.5	14.2	13.0	1.7

CDD chlorinated dibenzo-p-dioxin, CDF chlorinated dibenzofuran, GM geometrical mean, GSD geometrical standard deviation, LOD limit of detection, PCDD polychlorinated dibenzo-p-dioxin, PCDF polychlorinated dibenzofuran, ppt parts per trillion, TEQ toxic equivalency