Demographic information
| All subjects | Subjects with MRI scans, YLSI, and CANTAB data | Subjects with only MRI scans and YLSI data | p values (comparing subjects with and without CANTAB data) | |
|---|---|---|---|---|
| Age (mean ± SD months) | 142.357 ± 21.1226 months | 140.714 ± 19.758 months | 146.610 ± 24.44 months | F = 0.954, p = 0.333 |
| Puberty (Tanner staging) | 1.725 ± 1.283 | 1.7045 ± 1.280 | 1.7794 ± 1.328 | F = 0.041, p = 0.840 |
| Whole-brain volume (mm3) | 1431.792 ± 130.30 | 1431.202 ± 117.34 | 1433.3212 ± 163.30 | F = 0.003, p = 0.955 |
| Gender (male, female) | 32 males, 29 females | 22 males, 22 females | 10 males, 7 females | χ2 = 0.383, p = 0.536 |
| SES (as indexed by maternal education) | 6.0851 ± 0.974 | 6.20 ± 0.868 | 5.75 ± 1.215 | F = 1.946, p = 0.170 |
Maternal education varied on a numeric scale from 1 to 8, denoting level of education obtained with possible choices of grade school, high school or general education diploma, 2-year college, trade, or technical school, 4-year college, or graduate school. SES, Socioeconomic status.