Table 2.
Birth characteristics of 346 singletons from the Environment and Reproductive Health (EARTH) Study.
| Child Characteristics | All Children N=346 |
Boys n=180 |
Girls n=166 |
|---|---|---|---|
| Male, n (%) | 180 (52) | ||
| Birth Weight (grams) | |||
| Mean (SD) | 3373 (534) | 3448 (532) | 3292 (526) |
| min-max | 1090–5040 | 1310–5040 | 1090–4650 |
| Head Circumference* (cm) | |||
| Mean (SD) | 34.3 (2.5) | 35.0 (2.4) | 33.7 (2.4) |
| min-max | 14.0–54.6 | 29.0–54.6 | 14.0–37.5 |
| Low Birth Weight | |||
| <2500grams, n (%) | 12 (3.5) | 4 (2) | 8 (5) |
| Gestational Age at Birth | |||
| Mean weeks (min-max) | 39.4 (29–42) | 39.4 (32–42) | 39.3 (29–42) |
| Mean days (min-max) | 276 (205–294) | 276 (224–294) | 276 (205–294) |
| Preterm Birth | |||
| <37 weeks, n (%) | 26 (7.5) | 12 (6.7) | 14 (8) |
| Mode of Conception | |||
| IVF | 195 (56) | 103 (57) | 92 (55) |
| Non-IVF or Untreated | 151 (44) | 77 (43) | 74 (45) |
*
N=227 infants with head circumference measurements.