TABLE 1.
Participant characteristics at “baseline” assessment.
| All participants (N = 70) |
SI (n = 27) |
SN (n = 43) |
Test statistic | p | |
|
Age at scan Mean (SD) Range |
12.7 (0.66) 11.1–14.0 |
12.9 (0.61) 11.5–14.0 |
12.7 (0.69) 11.1–14.0 |
t(68) = −1.57 |
0.12 |
|
Sex Females, n (%) Males, n (%) |
40 (57%) 30 (43%) |
15 (56%) 12 (44%) |
25 (58%) 18 (42%) |
χ2 = 0.045(1) | 0.83 |
|
PDS Mean (SD) Females Males |
2.3 (0.67) 2.58 (0.67) 1.94 (0.47) |
2.4 (0.64) 2.72 (0.65) 2.1 (0.46) |
2.2 (0.68) 2.49 (0.68) 1.83 (0.47) |
t(68) = −1.42 t(38) = −1.07 t(28) = −1.55 |
0.16 0.29 0.13 |
|
Race, n (%) African American Caucasian Hispanic/Latino Other |
19 (27%) 42 (60%) 4 (6%) 5 (7%) |
6 (22.2%) 15 (55.6%) 3 (11.1%) 3 (11.1%) |
13 (20.2%) 27 (62.8%) 1 (2.3%) 2 (4.7%) |
χ2(3) = 3.75 | 0.29 |
|
FSIQ Mean (SD) |
112.1 (15.3) |
107.7 (14.4) |
114.8 (15.4) |
t(68) = 1.92 | 0.059 |
|
SES Index z-score Median (range) Parental education, years, mean (SD) Household income, median |
0.22 (−2.7–1.45) 16.6 (2.8) 100,000–149,000 |
0.22 (−2.0–1.45) 16.5 (2.8) 100,000–149,000 |
0.26 (−2.68–1.36) 16.6 (2.8) 100,000–149,000 |
U = 599 |
0.82 |
| Family history | 10 (14.9%) | n = 26 | n = 41 | χ2 = 4.82(1) | 0.028* |
| (FH±), n (%) | 57 (85.1%) | ||||
| N = 67, | |||||
| FHP | 7 (26.9%) | 3 (7.3%) | |||
| FHN | 19 (73.1%) | 38 (92.7%) |
PDS, pubertal development scale; FSIQ, full-scale IQ; SES, socioeconomic status.
*Significant at p < 0.05.