Table 1.
Concentrations and percentage of quantifiable and missing samples for the 27 EDCs in the original data set and the imputed data set (n = 470).
| EDCs | Complete case, original data set | Imputed data set | ||||||
|---|---|---|---|---|---|---|---|---|
| < LOD (n) | Missing (n) | Minimum | Maximum | Mean (95% CI) | GM | Mean (95% CI) | GM | |
| MEPa | 0 | 110 | 34 | 9379.9 | 605.4 (525.2, 685.7) | 379.5 | 597.8 (523.6, 672.1) | 376.1 |
| MnBPa | 0 | 110 | 5.8 | 835.7 | 46.1 (39.2, 53) | 32.4 | 45.6 (39.8, 51.4) | 32.7 |
| MiBPa | 0 | 110 | 5.1 | 334.2 | 41.5 (37.4, 45.5) | 32.6 | 41.1 (37.5, 44.7) | 32.6 |
| MBzPa | 0 | 110 | 1.5 | 405.1 | 19.1 (15.7, 22.5) | 12.5 | 18.8 (16, 21.7) | 12.6 |
| 7OHMMeOPa | 81 | 122 | 0.4 | 343.5 | 3.4 (1.5, 5.4) | 1.7 | 3.2 (1.7, 4.6) | 1.8 |
| MECPPa | 0 | 110 | 7.7 | 718.9 | 51.6 (46.1, 57.1) | 40.8 | 50.9 (46.1, 55.6) | 40.6 |
| MEHHPa | 0 | 110 | 5.3 | 503.4 | 38.2 (33.5, 42.9) | 28.6 | 37.6 (33.6, 41.5) | 28.6 |
| MEOHPa | 0 | 110 | 4.1 | 378.3 | 27.8 (24.5, 31.1) | 21.5 | 27.4 (24.6, 30.2) | 21.4 |
| MEHPa | 0 | 110 | 1.8 | 266.9 | 14.6 (12.8, 16.3) | 11.2 | 14.5 (13, 16) | 11.2 |
| MCMHPa | 0 | 182 | 14.4 | 1086.5 | 58.3 (49.7, 66.9) | 45.9 | 56.1 (50, 62.1) | 45.3 |
| BPAa | 0 | 97 | 0.3 | 69.4 | 3.7 (3.1, 4.2) | 2.7 | 3.6 (3.2, 4.1) | 2.7 |
| Cdb | 23 | 188 | 0.1 | 5.9 | 0.7 (0.6, 0.8) | 0.6 | 0.7 (0.6, 0.8) | 0.6 |
| Asb | 0 | 99 | 2.9 | 702.2 | 65.5 (57.7, 73.3) | 42.8 | 66.1 (58.6, 73.6) | 43 |
| Pbb | 3 | 190 | 0.5 | 25.2 | 5.1 (4.6, 5.6) | 4.2 | 5.3 (4.9, 5.8) | 4.4 |
| Hgc | 24 | 120 | 1.4 | 60 | 8.1 (7.5, 8.8) | 6.3 | 8.2 (7.6, 8.9) | 6.4 |
| DDEd | 1 | 14 | 7.7 | 17263.4 | 236.4 (152.3, 320.5) | 126.3 | 235.5 (153.8, 317.2) | 126.8 |
| HCBd | 34 | 14 | 4.5 | 293 | 51.9 (48.1, 55.7) | 38.5 | 51.9 (48.1, 55.7) | 38.4 |
| βHCHd | 45 | 14 | 4.4 | 497.6 | 41.2 (37.8, 44.6) | 31.3 | 41.2 (37.8, 44.6) | 31.3 |
| PCB-138d | 100 | 14 | 4.5 | 98.1 | 20.4 (19.2, 21.5) | 16.9 | 20.3 (19.2, 21.5) | 16.8 |
| PCB-153d | 33 | 14 | 4.5 | 154.9 | 37.3 (35.4, 39.2) | 31.5 | 37.3 (35.4, 39.2) | 31.4 |
| PCB-180d | 75 | 14 | 3.9 | 119.7 | 25.2 (23.8, 26.6) | 20.7 | 25.1 (23.7, 26.5) | 20.6 |
| PBDE-47e | 61 | 280 | 0.1 | 15 | 1 (0.7, 1.2) | 0.5 | 1 (0.8, 1.1) | 0.5 |
| PBDE-99e | 59 | 280 | 0 | 8.9 | 0.6 (0.4, 0.7) | 0.3 | 0.6 (0.5, 0.7) | 0.3 |
| PBDE-100e | 39 | 280 | 0 | 3.2 | 0.4 (0.3, 0.4) | 0.2 | 0.4 (0.3, 0.4) | 0.2 |
| PBDE-153e | 24 | 280 | 0.1 | 12.2 | 1 (0.8, 1.1) | 0.7 | 1 (0.8, 1.2) | 0.7 |
| PBDE-154e | 25 | 280 | 0.1 | 12.2 | 1 (0.8, 1.1) | 0.7 | 1 (0.8, 1.2) | 0.7 |
| PBDE-209e | 37 | 280 | 0 | 5.3 | 1.1 (1.0, 1.3) | 0.8 | 1.1 (1, 1.2) | 0.8 |
| Abbreviations: As, arsenic; βHCH, β-hexachlorocyclohexane; BPA, bisphenol A; Cd, cadmium; CI, confidence interval; DDE, dichlorodiphenyldichloroethylene; EDCs, endocrine-disrupting chemicals; GM, geometric mean; HCB, hexachlorobenzene; Hg, mercury; LOD, limit of detection; MBzP, monobenzyl phthalate; MEHHP, mono(2-ethyl-5-hydroxyhexyl) phthalate; MEHP, mono(2-ethylhexyl) phthalate; MEOHP, mono(2-ethyl-5-oxohexyl) phthalate; MEP, monoethyl phthalate; MiBP, monoisobutyl phthalate; MnBP, mono-n-butyl phthalate; Pb, lead; PBDEs, polybrominated diphenyl ethers; PCBs, polychlorinated biphenyls; MCMHP, mono(2-carboxyhexyl) phthalate; MECPP, mono(2-ethyl-5-carboxypentyl) phthalate; 7OHMMeOP, mono(4-methyl-7-hydroxyoctyl) phthalate. aFirst- and third-trimester urine (μg/g creatinine). bFirst- and third-trimester urine (ng/g creatinine). cCord blood (μg/L). dFirst-trimester serum (ng/g serum lipid). eColostrum (ng/g colostrum lipid). | ||||||||