Table 3.
Item-response probabilities and transition probabilities for selected LTA model.
| Latent Status | ||||
|---|---|---|---|---|
|
| ||||
| Non-Drinker | Weekend Non-Binger | Weekend Binger | Heavy Drinker | |
| Item-Response Probabilities | ||||
|
| ||||
| Drink in past month | 0.10 | 0.99 | 1.00 | 1.00 |
| Been drunk in past month | 0.00 | 0.53 | 0.99 | 1.00 |
| Weekday (Sun, Mon, Tues, Wed) drinking | 0.00 | 0.05 | 0.08 | 0.30 |
| Thursday drinking | 0.00 | 0.06 | 0.02 | 0.74 |
| Weekend (Fri, Sat) drinking | 0.02 | 0.65 | 0.88 | 0.98 |
| Binge drank in past 2 weeks | 0.00 | 0.10 | 0.83 | 0.95 |
| Peak BAC > 0.08 | 0.00 | 0.23 | 0.89 | 0.94 |
|
| ||||
| Proportion of Statuses at: | ||||
| Time 1 (Baseline) | 0.42 | 0.20 | 0.30 | 0.08 |
| Time 2 (Fall Follow-up) | 0.30 | 0.19 | 0.22 | 0.28 |
|
| ||||
| Transitions from Time 1 (rows) to Time 2 (columns): | ||||
| Non-Drinker | 0.64 | 0.21 | 0.11 | 0.04 |
| Weekend Non-Binger | 0.14 | 0.43 | 0.24 | 0.18 |
| Weekend Binger | 0.02 | 0.06 | 0.41 | 0.51 |
| Heavy Drinker | 0.01 | 0.03 | 0.00 | 0.96 |
Note: Item-response probabilities are constrained to be equal at two time points. Entries in bold font indicate status-defining probabilities (>0.60). Entries in bold and italic font indicate membership in the same latent status at both times (i.e., stability)