Table 3.

Linear models predicting psychosocial outcomes from stimulant misuse and covariates.

	Outcomes

	Drug Consequences			Positive Urgency			Negative Urgency			Depressive Symptoms			GPA

Predictors	Estimates	CI	p	Estimates	CI	p	Estimates	CI	p	Estimates	CI	p	Estimates	CI	p
Intercept	0.38	0.23 – 0.52	<0.001	0.26	0.05 – 0.47	0.017	0.38	0.17 – 0.60	0.001	0.03	−0.18 – 0.24	0.781	3.22	3.09 – 3.36	<0.001
Demographics
Race
Asian American	0.02	−0.08 – 0.12	0.739	0.32	0.18 – 0.46	<0.001	0.04	−0.11 – 0.18	0.632	0.14	−0.00 – 0.28	0.056	0	−0.07 – 0.08	0.939
African American	0.2	0.11 – 0.30	<0.001	0.12	−0.01 – 0.26	0.076	0.05	−0.09 – 0.19	0.484	0.12	−0.01 – 0.25	0.078	−0.47	−0.54 – −0.40	<0.001
Hispanic/Latino	−0.05	−0.19 – 0.09	0.455	0.02	−0.18 – 0.22	0.868	−0.06	−0.27 – 0.14	0.554	0.08	−0.12 – 0.27	0.434	−0.12	−0.22 – −0.01	0.027
Male	0.16	0.09 – 0.23	<0.001	0.26	0.16 – 0.36	<0.001	−0.05	−0.15 – 0.06	0.381	−0.27	−0.37 – −0.17	<0.001	−0.02	−0.08 – 0.03	0.395
Year in school	−0.04	−0.07 – −0.01	0.004	−0.06	−0.10 – −0.01	0.008	−0.06	−0.10 – −0.01	0.012	0.01	−0.03 – 0.05	0.527	0.03	0.00 – 0.06	0.032
Study effects
MFS vs. REAL-U	0.06	−0.01 – 0.13	0.101	−0.22	−0.32 – −0.12	<0.001	−0.18	−0.28 – −0.08	0.001	−0.05	−0.15 – 0.04	0.287	0.03	−0.02 – 0.08	0.276
Test Form B	−0.04	−0.15 – 0.07	0.494	0.07	−0.09 – 0.23	0.415	0.07	−0.10 – 0.23	0.44	0.05	−0.11 – 0.21	0.529	0.01	−0.08 – 0.09	0.846
Comparisons to stimulant-only group
Main effects
Other hard drugs only	0.01	−0.16 – 0.19	0.877	−0.11	−0.37 – 0.15	0.399	−0.12	−0.38 – 0.14	0.375	0.08	−0.17 – 0.33	0.551	0.08	−0.05 – 0.21	0.224
Both stimulants and other hard drugs	0.66	0.51 – 0.82	<0.001	0.21	−0.01 – 0.43	0.056	0.26	0.03 – 0.49	0.024	0.15	−0.07 – 0.36	0.178	−0.03	−0.14 – 0.09	0.634
Neither stimulants nor other hard drugs	−0.59	−0.71 – −0.47	<0.001	−0.27	−0.44 – −0.09	0.003	−0.22	−0.40 – −0.05	0.014	0.04	−0.13 – 0.20	0.679	0.07	−0.02 – 0.16	0.139
Interactions with test form
Other hard drugs only	0.03	−0.15 – 0.21	0.738	−0.23	−0.48 – 0.03	0.078	−0.25	−0.51 – 0.01	0.059	−0.06	−0.30 – 0.19	0.659	−0.03	−0.16 – 0.10	0.631
Both stimulants and other hard drugs	0.02	−0.13 – 0.17	0.787	−0.2	−0.42 – 0.02	0.072	−0.06	−0.28 – 0.16	0.602	−0.01	−0.23 – 0.20	0.918	−0.03	−0.14 – 0.08	0.612
Neither stimulants nor other hard drugs	0.06	−0.06 – 0.18	0.35	−0.1	−0.28 – 0.07	0.234	−0.08	−0.25 – 0.10	0.399	0.04	−0.12 – 0.21	0.609	0	−0.09 – 0.09	0.982

Observations			1534			1534			1534			1534			1151
R² / adjusted R²		0.302 / 0.296			0.082 / 0.074			0.036 / 0.028			0.033 / 0.025			0.154 / 0.144