Table 3.
Conditional probabilities of substance use trajectory class membership: Results from sequential process latent class growth analysis (N = 2,244)
| Tobacco Class | Alcohol Class | |||
|---|---|---|---|---|
|
| ||||
| 1. Low (47%) | 2. Low Increase (30%) | 3. Medium High (17%) | 4. Steady High (6%) | |
| 1. Abstaining (68%) | 0.880 | 0.599 | 0.404 | 0.183 |
|
| ||||
| 0.612 | 0.269 | 0.103 | 0.016 | |
|
| ||||
| 2. Low Increasing (11%) | 0.057 | 0.176 | 0.166 | 0.150 |
|
| ||||
| 0.228 | 0.455 | 0.242 | 0.075 | |
|
| ||||
| 3. Decreasing (11%) | 0.047 | 0.127 | 0.205 | 0.196 |
|
| ||||
| 0.207 | 0.359 | 0.326 | 0.107 | |
|
| ||||
| 4. Moderate Increasing (6%) | 0.009 | 0.062 | 0.136 | 0.218 |
|
| ||||
| 0.068 | 0.320 | 0.395 | 0.217 | |
|
| ||||
| 5. Steady High (4%) | 0.007 | 0.035 | 0.089 | .254 |
|
| ||||
| 0.070 | 0.244 | 0.346 | 0.340 | |
Note. Non-italicized probabilities represent tobacco class membership conditional on alcohol class membership and sum to 1.0 within each alcohol class.
Italicized probabilities represent alcohol class membership conditional on tobacco class membership and sum to 1.0 within each tobacco class.