Table 1.
Demographic variables and descriptive statistics for male and female samples.
| Males | Females | |
|---|---|---|
| Overall N | 568 | 245 |
| FH+/FH− (%FH+) | 439/129 (77%) | 194/51 (79%) |
| Number of unique families | 386 | 207 |
| Race/Ethnicity | 89% Caucasian; 5% African American 3% Bi-racial 3% Hispanic/Caucasian |
84% Caucasian; 7% African American 4% Bi-racial 5% Hispanic/Caucasian |
| % 3 Tanner Ratings | 48% | 54% |
| % 2 Tanner Ratings | 34% | 34% |
| % 1 Tanner Rating | 18% | 11% |
| Age at mid-puberty (SD) | 12.63 (.50) | 12.22 (.34) |
| Average Drink Volume 16–18 (SD) | 168.54 (404.10) | 104.63 (211.47) |
| Average Binge Freq. 16–18 (SD) | 18.94 (43.84) | 10.56 (28.55) |
| Average Marijuana Freq. 16–18 (SD) | 35.23 (84.07) | 19.95 (62.86) |
| N Drink Volume | 557 | 235 |
| N Binge Freq. | 563 | 244 |
| N Marijuana Freq. | 542 | 230 |
Notes: Overall N = total number of subjects; FH+ = positive family history for alcohol use disorder; FH− = no family history for alcohol use disorder; % X Tanner Ratings = percentage of sample with X number of self-report pubertal status ratings; SD = standard deviation; drink volume = average yearly number of alcoholic drinks; binge freq. = average yearly number of binge-drinking days; marijuana freq. = average yearly number of marijuana use days; N drink volume = number of subjects with available data for the drink volume; N binge freq. = number with available data for binge freq.; N marijuana freq. = number with available data for marijuana freq.