Table 2.

Interactive Effects on Proportion of Opioid Use Days

	No interaction term			With interaction term

	Unstandardized Estimate (95% CI)	t-value	p-value	Unstandardized Estimate (95% CI)	t-value	p-value

*Model 1: Coping Motives*
Depressive symptoms	1.46 (−0.04, 2.95)	1.93	.056	0.68 (−0.92, 2.28)	0.84	.403
Coping Motives	0.03 (−1.65, 1.71)	0.04	.971	0.37 (−1.30, 2.04)	0.44	.662
Depressive Symptoms × Coping Motives	-	-	-	0.48 (0.07, 0.90)	2.32	.022*
Covariates
Female Gender	−20.47 (−35.04, −5.89)	−2.78	.006*	−20.25 (−34.55, −5.95)	−2.81	.006*
Age	0.62 (0.07, 1.17)	2.22	.029*	0.67 (0.13, 1.21)	2.44	.017*
High school degree	−2.69 (−16.91, 11.53)	−0.37	.709	−3.69 (−17.66, 10.29)	.−0.52	.602
Past 30-day Income^a	−0.01 (−0.01, 0.001)	−1.75	.083	−0.01 (−0.01, 0.0001)	−1.96	.053
*Model 2: Impulsivity*
Depressive symptoms	0.97 (−0.65, 2.58)	1.19	.238	0.75 (−0.86, 2.35)	0.92	.360
Impulsivity	0.73 (−0.29, 1.74)	1.42	.159	0.72 (−0.28, 1.73)	1.43	.155
Depressive Symptoms × Impulsivity	-	-	-	0.17 (0.0002,0.34)	1.98	.050*
Covariates
Female Gender	−21.98 (−36.53, −7.43)	−2.99	.003*	−21.86 (−36.22, −7.50)	−3.02	.003*
Age	0.69 (0.15, 1.23)	2.52	.013*	0.73 (0.19, 1.26)	2.68	.009*
High school degree	−2.14 (−16.23, 11.95)	−0.30	.764	−2.06 (−15.96, 11.85)	−0.29	.770
Past 30-day Income^a	−0.01 (−0.01, 0.001)	−1.71	090	−0.01 (−0.01, 0.001)	−1.64	.104

^a.

Income was assessed as money received in the past month from all sources, including employment, unemployment insurance, public assistance, social security, family and friends, and illegal activities. This variable contained outliers and was winsorized.