Table 6.
Linear mixed effects model for the effect CUD severity on reaction time in CAAT.
| Model |
Model coefficients |
||||||
|---|---|---|---|---|---|---|---|
|
Fixed effects |
Random effects | ||||||
| B | 95 % CI (B) | SE (B) | t | p | SD | ||
| Intercept | 6.39 | 6.35: 6.42 | 0.02 | 391.18 | < 0.001 | 0.16 | |
| CUD Severity (MINI) | −0.01 | −0.05: 0.02 | 0.02 | −0.89 | 0.38 | ||
| Movement: Approach-Avoid | 0.08 | 0.06: 0.09 | 0.01 | 8.15 | < 0.001 | 0.07 | |
| Stimulus: Cannabis - Neutral | 0.00 | −0.01: 0.02 | 0.01 | 0.57 | 0.57 | 0.02 | |
| CUD Severity (MINI) * Movement | −0.01 | −0.03: 0.01 | 0.01 | −1.09 | 0.28 | ||
| CUD Severity (MINI)* Stimulus | 0.00 | −0.02: 0.01 | 0.01 | −0.64 | 0.52 | ||
| Movement * Stimulus | −0.04 | −0.06: −0.02 | 0.01 | −4.38 | < 0.001 | 0.04 | |
| CUD Severity (MINI) * Movement * Stimulus | 0.01 | −0.01: 0.02 | 0.01 | 0.68 | 0.50 | ||
| Interaction with Site | |||||||
| Intercept | 6.42 | 6.38: 6.47 | 0.02 | 304.53 | < 0.001 | 0.15 | |
| Site: NL-TX | −0.09 | −0.16: −0.03 | 0.03 | −2.88 | 0.00 | ||
| CUD Severity (MINI) | −0.02 | −0.06: 0.02 | 0.02 | −0.80 | 0.43 | ||
| Movement: Approach-Avoid | 0.09 | 0.07: 0.11 | 0.01 | 7.36 | <0.001 | 0.07 | |
| Stimulus: Cannabis - Neutral | 0.00 | −0.02: 0.01 | 0.01 | −0.32 | 0.75 | 0.02 | |
| Site * CUD Severity (MINI) | 0.02 | −0.04: 0.08 | 0.03 | 0.66 | 0.51 | ||
| Site * Movement | −0.04 | −0.07: 0 | 0.02 | −1.90 | 0.06 | ||
| Site * Stimulus | 0.01 | −0.01: 0.04 | 0.01 | 1.10 | 0.27 | ||
| CUD Severity (MINI) * Movement | −0.01 | −0.04: 0.01 | 0.01 | −1.12 | 0.27 | ||
| CUD Severity (MINI)* Stimulus | −0.01 | −0.02: 0.01 | 0.01 | −0.83 | 0.41 | ||
| Movement * Stimulus | −0.04 | −0.06: −0.01 | 0.01 | −3.17 | < 0.01 | 0.03 | |
| Site * CUD Severity (MINI) * Movement | 0.01 | −0.02: 0.05 | 0.02 | 0.75 | 0.46 | ||
| Site * CUD Severity (MINI)* Stimulus | 0.00 | −0.02: 0.03 | 0.01 | 0.35 | 0.73 | ||
| Site * Movement * Stimulus | −0.01 | −0.04: 0.03 | 0.02 | −0.32 | 0.75 | ||
| CUD Severity (MINI) * Movement * Stimulus | 0.00 | −0.02: 0.02 | 0.01 | 0.07 | 0.94 | ||
| Site * CUD Severity (MINI) * Movement * Stimulus | 0.01 | −0.02: 0.05 | 0.02 | 0.75 | 0.45 | ||
Note. Linear mixed model results using random intercepts and maximum likelihood estimation; CI: Confidence Interval (Wald); TX: Texas NL: Netherlands, SE: Standard Error, SD: Standard deviation. CAN & NL were used as the reference categories. Significant results are presented in bold.