TABLE 2.
Demographic characteristics for participants included in pediatric atlas.
| 1-year scans (n = 170) |
2-year scans (n = 171) |
|||
| N | N | |||
| Child sex | ||||
| Male | 95 | 88 | ||
| Female | 75 | 83 | ||
| Race | ||||
| White | 97 | 100 | ||
| Black or African American | 60 | 58 | ||
| Other | 13 | 13 | ||
| Twin status | ||||
| Non-twin (singleton) | 80 | 80 | ||
| Twin | 90 | 91 | ||
| Monozygotic | 34 | 44 | ||
| Dizygotic | 56 | 46 | ||
|
| ||||
| M (SD) | Range | Mean (SD) | Range | |
|
| ||||
| Gestational age at birth (weeks) | 37.12 (2.77) |
27.43 – 41.29 | 36.95 (2.88) |
27.43 – 42.14 |
| Birthweight (g) | 2795.34 (721.01) | 790 – 4730 | 2763.78 (738.03) | 790 – 4701 |
| Gestational age at scan (PMA, weeks) | 93.72 (0.52) |
86.29 – 109.60 | 108.87 (4.67) |
131.43 – 162.43 |
| Age at scan (weeks since birth) | 56.60 (0.59) |
47.43 – 73.00 | 145.82 (3.84) |
94.43 – 121.14 |
| Maternal education (years) | 14.05 (3.95) |
0 – 25 | 13.69 (3.40) |
0 – 23 |
| Maternal age at birth (years) | 29.70 (6.59) |
17 – 45 | 29.81 (6.09) |
16 – 45 |