Table 2.
Descriptive statistics of chemical concentrations (ng/g silicone) frequently detected in silicone wristbands worn at 12 or 24 gestational weeks.
| 12 Gestational Weeks | 24 Gestational Weeks | ||||||
|---|---|---|---|---|---|---|---|
| (n = 255) | (n = 20) | ||||||
| Chemical | CASN | % Detected | Median (IQR) | % Detected | Median (IQR) | ICC (95% CI) for 12 and 24 Gestational Weeksa | MyExposome Classification |
| Di-n-butyl phthalate | 84-74-2 | 99 | 4,580 (2,440, 8490) | 100 | 8,790 (5,935, 14,725) | 0.09 (0.00, 0.50) | Chemicals in commerce, personal care products, pesticides |
| Galaxolide | 1222-05-5 | 98 | 6,930 (2,380, 16,000) | 90 | 7,470 (3,028, 19,250) | 0.58 (0.26, 0.75) | Chemicals in commerce, personal care products |
| Diisobutyl phthalate | 84-69-5 | 97 | 4,810 (2,445, 8,335) | 80 | 6,680 (768, 10,800) | 0.62 (0.14, 0.78) | Chemicals in commerce |
| Butyl benzyl phthalate | 85-68-7 | 94 | 2,650 (1,115, 8,230) | 80 | 7,385 (3,038, 13,675) | 0.59 (0.00, 0.83) | Chemicals in commerce |
| Lilial | 80-54-6 | 90 | 1,150 (332, 2,895) | 90 | 1,570 (673, 8978) | 0.69 (0.27, 0.93) | Personal care products |
| Benzyl salicylate | 118-58-1 | 89 | 5,050 (1,755, 12,800) | 95 | 12,750 (4,382, 17,875) | 0.13 (0.00, 0.49) | Personal care products |
| Tonalide | 1506-02-1 | 83 | 297 (76, 1,065) | 80 | 564 (196, 3,165) | 0.68 (0.27, 0.91) | Personal care products |
| N,N-Diethyl-m-toluamide | 134-62-3 | 83 | 715 (196, 1,710) | 95 | 2,830 (1,027, 13,925) | 0.03 (0.00, 0.47) | Pesticides |
| Benzophenone | 119-61-9 | 82 | 220 (104, 422) | 80 | 845 (330, 1,138) | 0.22 (0.00, 0.78) | Chemicals in commerce, personal care products |
| Ethylene brassylate | 105-95-3 | 82 | 4,580 (592, 13,600) | 90 | 6,825 (1,595, 14,600) | 0.22 (0.04, 0.79) | Personal care products |
| Benzyl benzoate | 120-51-4 | 82 | 2,570 (763, 8,840) | 85 | 7,860 (3,772, 17,425) | 0.09 (0.00, 0.57) | Pesticides |
| Di-n-nonyl phthalate | 84-76-4 | 67 | 662 (0, 2,415) | 70 | 6,205 (0, 8,835) | 0.13 (0.00, 0.62) | Chemicals in commerce |
| Permethrin | 52645-53-1 | 67 | 265 (0, 1285) | 70 | 576 (0, 871) | 0.08 (0.00, 0.54) | Pesticides |
| Diethyl phthalate | 84-66-2 | 64 | 777 (0, 2,520) | 100 | 3,075 (2,165, 12,425) | 0.14 (0.00, 0.55) | Chemicals in commerce, pesticides |
| Butylated hydroxyanisole | 25013-16-5 | 64 | 72 (0, 174) | 10 | 0 (0, 0) | 0.00 (0.00, 0.10) | Personal care products, Pharmacological |
| 2,4-Di-tert-butylphenol | 96-76-4 | 61 | 203 (0, 972) | 60 | 420 (0, 1,075) | 0.22 (0.00, 0.77) | Chemicals in commerce |
| Triphenyl Phosphate | 115-86-6 | 58 | 163 (0, 580) | 75 | 504 (160, 1,580) | 0.33 (0.00, 0.58) | Chemicals in commerce, flame retardants |
a
Intraclass correlation coefficients and corresponding 95% CIs between chemical concentrations measured in wristbands worn at 12 and 24 gestational weeks. Chemical concentrations median standardized to batch, and centered (mean = 0) and scaled (standard deviation = 1).
CASN, Chemical Abstracts Service Number; ICC, intraclass correlation coefficient; IQR, interquartile range.