Table 1.
Demographic description of the sample
| Male (n = 96) | Female (n = 160) | Statistics | |
|---|---|---|---|
| Mean (SD) or n | Mean (SD) or n | ||
| Age in years | 13.90 (0.49) | 13.92 (0.56) | t(254) = 0.40, p = .691 |
| Caucasian (n) | Yes = 42, no = 54 | Yes = 62, no = 98 | χ 2 (1) = 0.62, p = .43 |
| Hispanic (n) | Yes = 32, no = 64 | Yes = 48, no = 112 | χ 2 (1) = 0.31, p = .58 |
| Puberty category (n) | Prepubertal = 1 | Prepubertal = 0 | χ 2 (4) = 98.65, p < .001 |
| Early pubertal = 10 | Early pubertal = 0 | ||
| Mid‐pubertal = 59 | Mid‐pubertal = 21 | ||
| Late‐pubertal = 24 | Late‐pubertal = 104 | ||
| Postpubertal = 2 | Postpubertal = 35 | ||
| Intracranial volume (cm3) | 1,619.10 (134.74) | 1,464.73 (120.91) | t(254) = −9.47, p < .001 |
| Income: Poverty ratio winsorized | 4.14 (4.11) | 3.33 (2.81) | t(148.59) = −1.72, p = .088 |