Table 7.

Linear mixed effects model for the effect of cannabis use quantity (grams per week) on reaction time in CAAT.

Model		Model coefficients
		Fixed effects					Random effects
		B	95 % CI (B)	SE (B)	t	p	SD
	Intercept	6.39	6.36: 6.42	0.02	378.91	< 0.001	0.17
	GramsWeek	−0.02	−0.05: 0.02	0.02	−0.96	0.34
	Movement: Approach-Avoid	0.08	0.06: 0.1	0.01	7.86	< 0.001	0.02
	Stimulus: Cannabis - Neutral	0.01	−0.01: 0.02	0.01	0.96	0.34	0.08
	GramsWeek * Movement	0.00	−0.02: 0.02	0.01	−0.23	0.82
	GramsWeek* Stimulus	0.01	0: 0.02	0.01	1.38	0.17
	Movement * Stimulus	−0.04	−0.06: −0.02	0.01	−4.19	< 0.001	0.04
	GramsWeek * Movement * Stimulus	−0.01	−0.03: 0.01	0.01	−1.05	0.30
Interaction with Site
	Intercept	6.45	6.4: 6.49	0.02	274.79	< 0.001	0.15749
	Site: NL-TX	−0.10	−0.17: −0.02	0.04	−2.64	0.01
	GramsWeek	0.07	0: 0.13	0.03	1.99	0.05
	Movement: Approach-Avoid	0.09	0.06: 0.12	0.01	6.35	< 0.001	0.07511
	Stimulus: Cannabis - Neutral	0.00	−0.02: 0.02	0.01	0.07	0.95	0.0198
	Site * GramsWeek	−0.09	−0.17: −0.01	0.04	−2.31	0.02
	Site * Movement	−0.04	−0.08: 0	0.02	−1.94	0.06
	Site * Stimulus	0.00	−0.05: 0.03	0.01	0.34	0.74
	GramsWeek * Movement	−0.01	−0.02: 0.03	0.02	−0.51	0.61
	GramsWeek* Stimulus	−0.01	−0.03: 0.02	0.01	−0.38	0.70
	Movement * Stimulus	−0.04	−0.07: −0.01	0.01	−2.70	< 0.01	0.03795
	Site * GramsWeek * Movement	0.02	−0.02: 0.07	0.02	0.97	0.33
	Site * GramsWeek * Stimulus	0.02	−0.01: 0.05	0.02	1.16	0.25
	Site * Movement * Stimulus	0.01	−0.03: 0.05	0.02	0.43	0.66
	GramsWeek * Movement * Stimulus	0.01	−0.03: 0.05	0.02	0.53	0.60
	Site * GramsWeek * Movement * Stimulus	−0.03	−0.08: 0.01	0.02	−1.35	0.18

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. Note: Significant results are presented in bold.