Table 1.

Logistic regressions for motivations to misuse prescription opioids predicting mental health problems.

Model variables	B	SE	p	OR	95% CIOR
Past year any mental illness vs. No past year mental illness a
Intercept (Did not misuse this substance)	0.52	0.04	.000	1.67	[1.53, 1.83]
Relieve physical pain	0.09	0.07	.211	1.09	[0.95, 1.25]
Relax or relieve tension	0.45	0.14	.003	1.57	[1.18, 2.10]
Experiment/see what like	0.37	0.21	.079	1.45	[0.96, 2.20]
Feel good/get high	0.39	0.09	.000	1.48	[1.23, 1.77]
Help with sleep	0.24	0.18	.195	1.27	[0.88, 1.82]
Help with feelings or emotions	2.06	0.21	.000	7.84	[5.20, 11.83]
Increase/decrease the effects of other drugs	0.23	0.44	.611	1.25	[0.52, 3.03]
Hooked or have to have drug	0.98	0.29	.001	2.67	[1.51, 4.75]
Some other reason	0.06	0.29	.852	1.06	[0.59, 1.90]
Misused, no motivation endorsed	−0.80	0.20	.000	0.45	[0.30, 0.68]
Did not misuse any substance	−1.04	0.04	.000	0.35	[0.33, 0.38]
Past year serious mental illness vs. No past year serious mental illness b
Intercept (Did not misuse this substance)	−0.77	0.07	.000	0.46	[0.40, 0.53]
Relieve physical pain	0.12	0.10	.267	1.12	[0.91, 1.38]
Relax or relieve tension	0.28	0.17	.101	1.32	[0.95, 1.85]
Experiment/see what like	0.38	0.25	.130	1.46	[0.89, 2.40]
Feel good/get high	0.49	0.14	.001	1.63	[1.23, 2.16]
Help with sleep	0.28	0.25	.258	1.33	[0.81, 2.19]
Help with feelings or emotions	1.67	0.21	.000	5.32	[3.46, 8.18]
Increase/decrease the effects of other drugs	−0.08	0.50	.877	0.93	[0.34, 2.53]
Hooked or have to have drug	0.87	0.32	.008	2.38	[1.26, 4.50]
Some other reason	0.62	0.35	.080	1.87	[0.93, 3.77]
Misused, no motivation endorsed	−0.34	0.31	.267	0.71	[0.38, 1.31]
Did not misuse any substance	−1.15	0.06	.000	0.32	[0.28, 0.36]
Past year major depressive episode vs. No past year major depressive episode c
Intercept (Did not misuse this substance)	−0.38	0.06	.000	0.69	[0.61, 0.77]
Relieve physical pain	0.08	0.10	.381	1.09	[0.90, 1.32]
Relax or relieve tension	0.21	0.17	.240	1.23	[0.87, 1.73]
Experiment/see what like	0.30	0.21	.162	1.34	[0.89, 2.04]
Feel good/get high	0.40	0.11	.001	1.49	[1.20, 1.85]
Help with sleep	0.16	0.21	.453	1.17	[0.77, 1.77]
Help with feelings or emotions	1.39	0.20	.000	4.00	[2.66, 6.00]
Increase/decrease the effects of other drugs	−0.09	0.46	.852	0.92	[0.36, 2.32]
Hooked or have to have drug	0.42	0.31	.182	1.52	[0.82, 2.83]
Some other reason	0.54	0.31	.089	1.72	[0.92, 3.21]
Misused, no motivation endorsed	−0.52	0.33	.120	0.60	[0.31, 1.15]
Did not misuse any substance	−0.94	0.05	.000	0.39	[0.35, 0.44]
Past year serious thoughts of suicide vs. No past year serious thoughts of suicide d
Intercept (Did not misuse this substance)	−0.88	0.07	.000	0.42	[0.36, 0.48]
Relieve physical pain	0.22	0.10	.037	1.24	[1.01, 1.52]
Relax or relieve tension	0.44	0.16	.010	1.55	[1.11, 2.14]
Experiment/see what like	0.55	0.23	.020	1.73	[1.09, 2.73]
Feel good/get high	0.55	0.14	.000	1.73	[1.30, 2.30]
Help with sleep	0.53	0.25	.037	1.70	[1.04, 2.80]
Help with feelings or emotions	1.84	0.22	.000	6.32	[4.05, 9.86]
Increase/decrease the effects of other drugs	−0.55	0.49	.267	0.58	[0.21, 1.55]
Hooked or have to have drug	0.49	0.26	.070	1.63	[0.96, 2.76]
Some other reason	0.54	0.35	.127	1.72	[0.85, 3.46]
Misused, no motivation endorsed	0.27	0.31	.388	1.31	[0.70, 2.44]
Did not misuse any substance	−1.05	0.06	.000	0.35	[0.31, 0.40]

Note. Included age, sex, household income, population density, and race as covariates. Reference category = No misuse of this prescription drug.

^aModel: Wald F(25, 26) = 180.87, p < .001, R² = .06 (Cox & Snell), .09 (Nagelkerke).

^bModel: Wald F(25, 26) = 138.37, p < .001, R² = .03 (Cox & Snell), .11 (Nagelkerke).

^cModel: Wald F(25, 26) = 138.63, p < .001, R² = .04 (Cox & Snell), .09 (Nagelkerke).

^dModel: Wald F(25, 26) = 65.76, p < .001, R² = .03 (Cox & Snell), .09 (Nagelkerke).