Table 2.
Mean (95% CI) for birth outcomes stratified by MeHg quartile (n = 271).
| Outcome | Quartiles of cord blood MeHg (μg/L) | Entire population ND–15.4 μg/L | |||
|---|---|---|---|---|---|
| ND–0.61 (Q1) | 0.62–1.04 (Q2) | 1.05–1.84 (Q3) | 1.85–15.4 (Q4) | ||
| Gestational age (days) | 270.0 (266.3, 273.7) | 272.1 (268.9, 275.3) | 273.2 (270.1, 276.4) | 273.7 (270.7, 276.8) | 272.3 (270.6, 273.9) |
| Birth weight (g) | 3,171 (3,033, 3,308) | 3,215 (3,061, 3,370) | 3,275 (3,141, 3,410) | 3,186 (3,038, 3,333) | 3,212 (3,140, 3,284) |
| Birth length (cm) | 49.7 (49.0, 50.3) | 49.8 (49.1, 50.6) | 50.3 (49.7, 50.8) | 50.3 (49.7, 51.0) | 50.0 (49.7, 50.3) |
| Head circumference (cm) | 33.6 (33.1, 34.1) | 33.7 (33.2, 34.1) | 33.3 (32.9, 33.7) | 33.5 (33.0, 33.9) | 33.5 (33.3 33.7) |
| Ponderal index [(g/cm3) × 100] | 2.57 (2.50, 2.64) | 2.58 (2.50, 2.66) | 2.57 (2.50, 2.63) | 2.48 (2.41, 2.55) | 2.55 (2.51, 2.58) |
| Abbreviations: ND, not detected; Q, quartile. | |||||