Table 1.
Demographics for eligible births.
| StudySample N = 48 N (%) or mean, median [range] |
New Hampshire Birth Cohort Study N = 1033 N (%) or mean, median [range] |
|
|---|---|---|
| Race | ||
| White | 48 (100) | 1002 (98.4) |
| Non-White | 0 (0.0) | 16 (1.57) |
| Missing | 0 | 15 |
| Ever smoke | ||
| Yes | 4 (9.09) | 145 (15.7) |
| No | 40 (90.1) | 780 (94.3) |
| Missing | 4 | 108 |
| Drinking status during pregnancy | ||
| Yes | 7 (15.6) | 59 (6.38) |
| No | 38 (84.4) | 866 (93.6) |
| Missing | 3 | 108 |
| Fetal sex | ||
| Male | 24 (50.0) | 514 (49.8) |
| Female | 24 (50.0) | 519 (50.2) |
| Maternal age at enrollment (years) | 31.5, 31.5 [20.0-40.0] | 31.1, 30.9 [18.4-44.8] |
| DW-iAS μg/L) | 2.43, 0.500 [0.100-8.18] | 4.08, 0.440 [<0.01-189.34] |
| U-tAs μg/L) | 6.83, 5.56 [0.25-32.46] | 6.05, 3.78 [0.21-288.48] |
| U-iAs μg/L) | 1.95, 0.98 [0.11-12.27] | 0.75, 0.31 [0.02-37.29] |
| U-MMAsVμg/L) | 0.87, 0.90 [0.06-2.11] | 0.49, 0.31 [0.01-28.35] |
| U-DMAsV μg/L) | 4.02, 3.50 [0.07-23.26] | 4.80, 2.84 [0.07-281.07] |
| Gestational age (weeks) | 39.31, 39.74 [32.28-41.94] | 39.31, 39.57 [25.29-44.85] |
| Ponderal index | 2.61, 2.66 [1.90-3.28] | 2.62, 2.60 [1.47-4.26] |
| Birth weight (grams) | 3443.97, 3518.49 [1455.00-5194.00] | 3414.66, 3435.00 [357.20-5318.00] |
| Birth length (inches) | 19.98, 20.08 [16.14-22.00] | 19.96, 20.00 [11.00-24.50] |
| Head circumference (cm) | 34.55, 35.00 [28.50-38.00] | 34.6, 34.50 [28.00-53.34] |
Subject demographics for pregnant women in the sub cohort (n = 48) are shown in comparison to the overall New Hampshire Birth Cohort (n = 1033).