Table 3.

Odds of Opioid/Benzodiazepine Simultaneous Use

MODEL 1: PTSD
Variable	B (SE)	p value	OR (95% CI)
Simultaneous use in past year
Age	−0.04 (0.02)	.120	0.97 (0.92, 1.01)
Female	0.14 (0.40)	.716	1.16 (0.53, 2.51)
Positive PTSD Screen	1.15 (0.41)	.005*	3.16 (1.42, 7.08)
Perceived Great Risk in Simultaneous use	−1.35 (0.42)	.003*	0.29 (0.13, 0.65)
Simultaneous use prior to past year
Age	−0.01 (0.01)	.356	0.99 (0.96, 1.01)
Female	0.25 (0.28)	.364	1.29 (0.75, 2.23)
Positive PTSD Screen	−0.05 (0.30)	.880	0.96 (0.53, 1.73)
Perceived Great Risk in Simultaneous use	−0.27 (0.33)	.406	0.76 (0.40, 1.48)
MODEL 2: Depression
Simultaneous use in Past Year ¹
Age	−0.06 (0.02)	.013*	0.95 (0.91, 0.99)
Female	0.17 (0.39)	.664	1.19 (0.55, 2.55)
Depressive symptoms	0.21 (0.09)	.014*	1.24 (1.04, 1.47)
Perceived Great Risk in Simultaneous use	−1.02 (0.41)	.013*	0.36 (0.16, 0.80)
Simultaneous use Prior to Past Year ¹
Age	−0.01 (0.01)	.384	0.99 (0.96, 1.02)
Female	0.25 (0.28)	.362	1.29 (0.75, 2.22)
Depressive symptoms	−0.01 (0.07)	.772	0.99 (0.86, 1.14)
Perceived Great Risk in Simultaneous use	−0.29 (0.33)	.386	0.75 (0.40, 1.43)
MODEL 3: Anxiety
Simultaneous use in Past Year ¹
Age	−0.05 (0.02)	.020*	0.95 (0.91, 0.99)
Female	0.14 (0.39)	.728	1.15 (0.53, 2.48)
Anxiety symptoms	0.27 (0.09)	.004*	1.31 (1.09, 1.57)
Perceived Great Risk in Simultaneous use	−1.08 (0.41	.009*	0.34 (.15, 0.77)
Simultaneous use Prior to Past Year ¹
Age	−0.01 (0.01)	.369	0.99 (0.96, 1.01)
Female	0.24 (0.28)	.387	1.27 (0.74, 2.20)
Anxiety symptoms	0.02 (0.07)	.769	1.02 (0.89, 1.17)
Perceived Great Risk in Simultaneous use	−0.28 (0.33)	.397	0.76 (0.40, 1.44)

^1.

Reference = Never engaged in simultaneous use. Mental health conditions were entered into separate regressions due to high levels of overlap between the conditions.