Table 5.
Estimates [and 95% Confidence Intervals] from Random-Intercept Mixed Models Testing Age Effects
| Est. | LCL | UCL | p | |
|---|---|---|---|---|
| Intercept | 2.49 | [2.12, | 2.86] | < .001 |
| Level-2 Effects | ||||
| Study 2 | − 0.97 | [− 1.45, | − 0.49] | < .001 |
| Study 1 | − 0.52 | [− 1.20, | 0.17] | .140 |
| Study 3 (Reference) | ||||
| Age | 0.00 | [− 0.04, | 0.03] | .942 |
| Dependence (No dependence = reference) | 0.75 | [0.35, | 1.15] | < .001 |
| Average Days Since Last Drink | 0.02 | [− 0.06, | 0.10] | .619 |
| Average Presence of Visible Alcohol Cues | 1.20 | [0.35, | 2.04] | .006 |
| Level-1 Effects | ||||
| Days Since Last Drink | 0.15 | [0.10, | 0.21] | < .001 |
| Presence of Visible Alcohol Cues (Alcohol is not present = reference) | 0.93 | [0.72, | 1.14] | < .001 |
| Cross-level interactions | ||||
| Age × Dependence | 0.00 | [− 0.04, | 0.05] | .877 |
| Age × Days Since Last Drink | − 0.01 | [− 0.02, | − 0.002] | .017 |
| Age × Presence of Visible Alcohol Cues | 0.01 | [− 0.02, | 0.05] | .475 |
| Intercept (Level-2) Variance | 2.08 | [1.65, | 2.52] | < .001 |
| Error (Level-1) Variance | 4.83 | [4.62, | 5.05] | < .001 |
| Fit Statistics | ||||
| Model Deviance (−2LL) | 18309.7 | |||
| AIC | 18313.7 | |||
| BIC | 18320.8 |
Note. −2LL = −2 Log Likelihood. AIC = Akaike Information Criterion. BIC = Bayesian Information Criterion. Model Deviance (−2LL) for the null (unconditional means) model was 19673.2, AIC = 19677.2, BIC = 19684.4.