Table 3.
Demographic data by trajectory group
| Alcohol | Alcohol Group 1 Nil to low drinkers (n = 142) |
Alcohol Group 2 Moderate drinkers (n = 166) |
Alcohol Group 3 Experimenters (n = 71) |
Alcohol Group 4 Late-onset heavy drinkers (n = 81) |
Alcohol Group 5 Early-onset heavy drinkers (n = 65) |
Total n |
|||||||||||
| % of total sample | 27.3% |
31.2% |
13.5% |
15.7% |
12.3% |
526 |
|||||||||||
| Males | 27.8% |
15.1% |
14.7% |
23.4% |
19.0% |
252 |
|||||||||||
| Females | 26.3% |
47.1% |
12.4% |
8.0% |
6.2% |
274 |
|||||||||||
| White | 21.3% |
32.6% |
15.2% |
17.1% |
13.8% |
427 |
|||||||||||
| Minority | 51.5% |
28.3% |
6.1% |
8.1% |
6.1% |
99 |
|||||||||||
| Marijuana |
Group 1 (Marijuana) Abstainers (n = 215) |
Group 2 (Marijuana) Occasional users (n = 160) |
Group 3 (Marijuana) Moderate users (n = 126) |
Group 4 (Marijuana) High users (n = 25) |
|||||||||||||
| % of total sample |
38.9% |
32.1% |
24.1% |
4.9% |
526 | ||||||||||||
| Males |
38.1% |
22.6% |
31.3% |
8.0% |
252 | ||||||||||||
| Females |
43.4% |
37.6% |
17.2% |
2.6% |
274 | ||||||||||||
| White |
40.7% |
31.4% |
24.4% |
3.5% |
427 | ||||||||||||
| Minority |
41.4% |
26.3% |
22.2% |
10.1% |
99 | ||||||||||||
| Hard drugs | Group 1 (Hard drug) Nil to low users (n = 389) |
Group 2 (Hard drug) Experimenters (n = 74) |
Group 3 (Hard drug) Late-onset heavy users (n = 41) |
Group 4 (Hard drug) Early-onset heavy users (n = 22) |
|||||||||||||
| % of total sample | 71.5% |
15.0% |
9.1% |
4.3% |
526 |
||||||||||||
| Males | 71.4% |
13.1% |
10.0% |
6.0% |
252 |
||||||||||||
| Females | 76.3% |
15.0% |
6.2% |
2.6% |
274 |
||||||||||||
| White | 72.1% |
15.0% |
8.2% |
4.7% |
427 |
||||||||||||
| Minority | 81.8% |
10.1% |
6.1% |
2.0% |
99 |
||||||||||||
Notes: Percentages may not add to 100 due to rounding. Comparisons across subgroups are based on modal assignment of participants.