Table 1.
Demographic comparisons of male (n = 127) and female (n= 154) subjects
| Males (n= 127) | Females (n= 154) | |
|---|---|---|
| Age in yearsa | Range: 4.9–22.1 | Range: 4.9–22.3 |
| Mean: 13.1 ± 3.7 | Mean: 13.1 ± 3.6 | |
| t= −0.004, df = 467, P= 0.99 | ||
| Handednessb | Right: 110 (86.6%) | Right: 141 (91.6%) |
| Left: 17 (13.4%) | Left: 13 (8.4%) | |
| χ2 = 1.8, df = 1, P= 0.18 | ||
| Raceb | White: 108 (85.0%) | White: 122 (79.2%) |
| African-American: 11 (8.7%) | African-American: 16 (10.4%) | |
| Asian: 0 (0%) | Asian: 3 (1.9%) | |
| Other or NA: 8 (6.3%) | Other or NA: 13 (8.4%) | |
| χ2 = 2.9, df = 3, P= 0.40 | ||
| Household income in 1000$b | Less than 25: 1 (0.8%) | Less than 25: 7 (4.5%) |
| 25–50: 33 (26.0%) | 25–50: 32 (20.8%) | |
| 50–75: 35 (27.3%) | 50–75: 34 (22.1%) | |
| 75–100: 31 (24.2%) | 75–100: 40 (26.0%) | |
| Over 100: 28 (22.0%) | Over 100: 41 (26.6%) | |
| χ2 = 5.8, df = 4, P= 0.22 | ||
| Mean testosterone level, collection 1a | Range: 5.7–535.6 | Range: 7.4–574.4 |
| Mean: 71.6 ± 65.4 | Mean: 52.7 ± 52.8 | |
| t= −3.5, df = 467, P= 0.001 |
at-test for independent samples.
bχ2 for independent samples.