Table 2 Ambient air pollution exposure at maternal home address(es) during pregnancy (A) and steroid levels in cord blood (B)
A. Pregnancy ambient exposure (µg/m3) | Mean ± SD | IQR | n |
|---|---|---|---|
Black carbon | |||
Entire pregnancy | 1.37 ± 0.39 | 0.39 | 378 |
Trimester 1 | 1.36 ± 0.41 | 0.58 | 378 |
Trimester 2 | 1.39 ± 0.44 | 0.55 | 378 |
Trimester 3 | 1.36 ± 0.41 | 0.56 | 378 |
PM2.5 | |||
Entire pregnancy | 14.03 ± 2.35 | 3.30 | 397 |
Trimester 1 | 13.49 ± 4.86 | 5.47 | 397 |
Trimester 2 | 14.01 ± 4.31 | 6.51 | 397 |
Trimester 3 | 14.66 ± 5.08 | 7.96 | 397 |
NO2 | |||
Entire pregnancy | 18.49 ± 4.34 | 5.29 | 397 |
Trimester 1 | 18.05 ± 5.63 | 7.58 | 397 |
Trimester 2 | 18.78 ± 5.78 | 8.17 | 397 |
Trimester 3 | 18.66 ± 5.79 | 7.96 | 397 |
B. Steroids in cord blood (units) | |||
17α-hydroxypregnenolone (ng/dL) | 396.23 ± 243.12 | 269.05 | 397 |
17α-hydroxyprogesterone (ng/dL) | 2727.11 ± 1254.58 | 1381.75 | 397 |
DHEA: dehydroepiandrosterone (ng/dL) | 166.35 ± 92.63 | 106.05 | 397 |
Pregnenolone (ng/dL) | 1734.04 ± 890.09 | 791.50 | 397 |
Androstenedione (ng/dL) | 54.20 ± 21.27 | 23.65 | 397 |
Testosterone (ng/dL) | 4.26 ± 3.84 | 3.34 | 397 |
SHBG: Sex Hormone Binding Globulin (nmol/L) | 370.36 ± 150.85 | 280.20 | 133 |