Table 2. Maternal and child characteristics of participants and non-participants.
| Sternberg sample | No Sternberg score | Non-participants | Total | |
|---|---|---|---|---|
| Number of participants | 1,333 | 295 | 1,561 | 3,189 |
| Sampling fraction | 9.7(1.5/49.6) | 9.7(1.2/49.6) | 8.0(1.2/49.6) | 8.0(1.5/49.6) |
| Timing of interview (Gestational week) | 17.0(13.0/24.0) | 17.0(13.0/23.0) | 17.0(13.0/24.0) | 17.0(13.0/24.0) |
| Maternal characteristics | ||||
| Age, years (Mean ± SD) | 30.9 ± 4.3 | 30.7 ± 4.6 | 30.3 ± 4.6 | 30.6 ± 4.5 |
| Prenatal marital statusSingle (%) | 2.4 | 5.8 | 2.9 | 3.0 |
| Parity | ||||
| 0 (%) | 49.7 | 51.5 | 49.1 | 49.5 |
| 1 (%) | 33.1 | 28.1 | 33.2 | 32.7 |
| 2 (%) | 17.2 | 20.3 | 17.7 | 17.7 |
| BMI, kg/m 2 (Median, 10/90 pctile) | 22.5(19.6/28.7) | 23.0(19.6/28.4) | 23.0(19.4/29.7) | 22.8(19.5/29.1) |
| Smoking in pregnancy Smokers (%) | 30.0 | 37.6 | 34.5 | 32.9 |
| Binge drinking in pregnancy 1 (%) | 70.1 | 67.5 | 65.3 | 67.5 |
| Alcohol intake in pregnancy, drinks/week (Mean ± SD) | ||||
| 0 | 47.2 | 43.7 | 50.4 | 48.4 |
| 1–4 | 41.2 | 42.7 | 38.9 | 40.2 |
| 5–8 | 10.4 | 12.5 | 10.1 | 10.4 |
| ≥ 9 2 | 1.3 | 1.0 | 0.6 | 0.9 |
| Child characteristics | ||||
| SexMale (%) | 50.8 | 57.3 | 51.2 | 51.6 |
| Birth weight, grams (Mean ± SD) | 3613.1 ± 509.0 | 3551.2 ± 545.2 | 3546.4 ± 555.7 | 3574.7 ± 536.5 |
| Gestational age at birth, days (Median, 10/90 pctile) | 282.0(268.0/293.0) | 280.0(266.0/293.0) | 281.0(264.0/293.0) | 281.0(266.0/293.0) |
1. Defined as intake of 5 drinks or more at one occasion
2. Range 9–14