Table 1. Participant characteristics.
Values represent mean (SD), unless otherwise noted. The groups were significantly different on pubertal and hormonal measures but not on any of the other measures.
| Males (n=22) | Females (n=22)f | Statistic | |
|---|---|---|---|
| Age | 13.47 (1.51) | 13.10 (1.62) | t42 = 0.80 |
| Pubertal Statusa | 3.00 (2.00) | 4.00 (1.00) | U42= 157.5, Z = −2.07* |
| IQb | 117.14 (11.14) | 113.45 (10.95) | t42 = 1.11 |
| SESc | 27.09 (10.02) | 25.00 (11.12) | U42= 219.5, Z = −.53 |
| Caucasian (%) | 90.90 | 90.90 | |
| Testosteroned (ng/dL) Range |
320.3 (175.14) 27.5 – 639.0 |
22.23 (12.64) 10.1 – 47.4 |
U30= 4.0, Z = −4.59* |
| Estradiole (pg/mL) | 16.27 (7.45) | 23.67 (13.0) | t39 = 2.23* |
| Range | 4.97 – 34.10 | 7.7 – 53.8 |
Pubertal Developmental Scale Crockett Stage; scores range 1–5, with higher scores reflecting greater maturity (Petersen et al., 1988); values represent median (interquartile range). The PDS has equivalent questions for growth in height, body hair, and skin changes for boys and girls, while questions regarding breast development, menstruation, voice changes, and facial hair are sex-specific.
Wechsler Abbreviated Scale of Intelligence (Wechsler, 1999)
Hollingshead Index of Social Position; higher scores indicate lower socioeconomic status (Hollingshead, 1957)
N=19 males and 13 females due to values below the detection limit (< 10 ng/dL) that were excluded from subsequent analyses
N=22 males and 19 females due lack of blood collected to be sufficient for both hormone assays for those three girls.
Nine of the 22 girls were premenstrual. Of the 13 postmenstrual girls, three reported irregular cycles, but these girls were also brought into the study during the first 10 days following menstruation.
p < 0.05