Table 5.
Item-response probability and class prevalence rates for students at 2-year institutions
| Latent Class |
||||
|---|---|---|---|---|
| Past Month Alcohol and Marijuana Indicators |
Non-users (26%) |
Light- drinking- only (39%) |
Heavy drinking/heavy marijuana/SAM use (27%) |
Light drinking/heavy marijuana (8%) |
| Any drink | 0.416 | 1.000 | 1.000 | 1.000 |
| Binge drink | 0.000 | 0.305 | 0.701 | 0.000 |
| Peak eBAC > .08 | 0.000 | 0.378 | 0.797 | 0.067 |
| Alcohol problems | 0.000 | 0.796 | 0.950 | 0.000 |
| SAM use | 0.000 | 0.000 | 0.842 | 0.212 |
| Marijuana use | 0.132 | 0.107 | 1.000 | 1.000 |
| Marijuana use > 1 time/day | 0.000 | 0.000 | 0.645 | 0.669 |
| Marijuana use of getting high >
15 days |
0.000 | 0.000 | 0.518 | 0.811 |
Note. All indicators assessed alcohol and marijuana use in the past month; eBAC = estimated blood alcohol concentration; SAM = simultaneous alcohol and marijuana use; Bold = class-defining probabilities