TABLE 1.
Individual Descriptive Statistics
| Characteristic | School 1 (N = 1193) |
School 2 (N = 419) |
||
|---|---|---|---|---|
| Wave I N = 1193 |
Wave II N = 1051 |
Wave I N = 419 |
Wave II N = 366 |
|
| Gender (% male) | 51.3 | 56.8 | ||
| Race/ethnicity (%) | ||||
| Hispanic | 39.7 | 1.0 | ||
| Non-Hispanic white | 23.1 | 98.8 | ||
| Non-Hispanic black | 24.7 | 0.0 | ||
| Asian | 33.0 | 1.4 | ||
| Other | 1.3 | 0.0 | ||
| Parent education (%)a | ||||
| Less than high school | 24.6 | 3.9 | ||
| High school | 20.2 | 32.5 | ||
| Some college or trade school | 29.3 | 34.8 | ||
| Graduate of college/university | 19.2 | 28.9 | ||
| Mean number of outside-of-school friends | 1.9 | 1.3 | ||
| Limited nominations (%)b | 5.3 | 0.0 | 4.8 | 0.0 |
| Past month marijuana use (%)c | ||||
| None | 79.3 | 80.3 | 70.1 | 75.1 |
| 1 to 3 times | 9.5 | 8.6 | 14.2 | 10.3 |
| 4 to 11 times | 5.1 | 5.5 | 6.7 | 4.0 |
| 12 to 32 times | 4.8 | 4.1 | 6.0 | 8.9 |
| 33 times or more | 1.4 | 1.5 | 2.2 | 1.7 |
a
Parent education had 307 missing cases in School 1, and 114 cases missing in School 2.
b
Participants who were only able to nominate 1 male and 1 female friend.
c
Log transformation (+1 constant) of the number of times marijuana was used in the past 30 days, rounded to the nearest whole number. Scores of 5 and 6 (which represent frequency of marijuana use in the past month of 90 times or more) have been recoded into the category of 33 times or more.