Table 5.

Multinomial multivariable logistic regression model showing associations between motivations of prescription stimulant misuse and sociodemographic factors, self rated health, suicidality, and specific substance use, misuse, and use disorders among adults with past year misuse, N=3,400^a

Characteristics	Lose weight vs. Be alert/concentrate n=2000a		Help study vs. Be alert/concentrate n=2700a		Get high/hooked/Adj. drug effects/experiment vs. Be alert/concentrate, n=2500a
	AOR	95% CI	AOR	95% CI	AOR	95% CI
Age
18-29	0.6	0.31-1.00	5.0	2.98-8.54	0.8	0.60-1.15
≥30 +	1.0		1.0		1.0
Sex
Men	0.2	0.08-0.37	1.5	1.16-1.92	1.3	1.02-1.75
Women +	1.0		1.0		1.0
Race/ethnicity
NH white +	1.0		1.0		1.0
NH black	2.5	1.03-6.19	1.3	0.75-2.14	1.7	1.03-2.94
Hispanic	2.2	1.09-4.27	1.8	1.23-2.63	1.2	0.76-1.96
NH other	0.9	0.29-2.73	1.6	1.01-2.58	1.7	1.08-2.65
Employment
Full time +	1.0		1.0		1.0
Part time	0.5	0.23-1.17	1.7	1.28-2.20	0.8	0.57-1.16
Unemployment	1.0	0.34-2.83	1.2	0.63-2.23	1.9	1.17-2.95
Family income
<$20,000 +	1.0		1.0		1.0
$20,000 $49,999	0.8	0.33-2.04	1.6	1.18-2.04	1.1	0.76-1.57
$50,000 $74,999	0.8	0.35-1.60	0.7	0.50-0.91	1.2	0.82-1.62
≥$75,000	0.8	0.37-1.72	1.0	0.65-1.44	1.4	0.89-2.06
Health insurance
Private only +	1.0		1.0		1.0
Uninsured	2.2	1.07-4.45	0.6	0.37-0.87	1.0	0.67-1.43
Medicaid only	1.6	0.79-3.23	0.6	0.38-0.84	1.0	0.64-1.51
Self-rated health
Excellent +	1.0		1.0		1.0
Very good	1.2	0.61-2.24	0.8	0.63-1.09	0.6	0.42-0.86
Good	1.3	0.66-2.72	0.6	0.44-0.91	0.7	0.45-0.96
Fair or poor	1.3	0.40-3.95	0.6	0.34-1.19	0.9	0.52-1.52
Suicide ideation
Yes	1.5	0.75-3.80	0.8	0.55-1.09	1.5	1.04-2.07
No +	1.0		1.0		1.0
Tobacco use/disorder
PM nicotine dependence	0.8	0.33-2.17	0.4	0.23-0.62	0.8	0.44-1.59
PY use, no dependence	0.8	0.35-1.98	1.0	0.63-1.44	1.0	0.54-1.77
Lifetime use, no PY use	0.8	0.34-2.11	0.8	0.53-1.29	0.9	0.44-1.68
Never use +	1.0		1.0		1.0
Alcohol use/disorder
PY alcohol use disorder	0.6	0.21-1.43	2.0	1.01-4.05	1.1	0.56-2.33
PY use, no disorder	0.6	0.25-1.56	2.2	1.12-4.40	0.9	0.43-1.71
Never use +	1.0		1.0		1.0
Cannabis use/disorder
PY cannabis use disorder	0.5	0.19-1.36	1.4	0.91-2.04	1.6	1.02-2.55
PY use, no disorder	0.4	0.22-0.84	1.1	0.84-1.50	1.2	0.86-1.78
Never use +	1.0		1.0		1.0
Cocaine use/disorder
PY use or use disorder	0.5	0.25-1.20	0.9	0.68-1.21	1.8	1.19-2.57
Lifetime use, no PY use	0.5	0.25-0.81	0.7	0.52-1.05	1.2	0.81-1.83
Never use +	1.0		1.0		1.0
Heroin use/disorder
PY heroin use & disorder	2.7	0.81-8.63	1.2	0.53-2.81	2.9	1.61-5.27
Lifetime use, no PY use	1.9	0.66-5.60	0.5	0.23-1.28	1.4	0.84-2.25
Never use +	1.0		1.0		1.0
Rx sedative/tranquilizer misuse/disorder
PY misuse & use disorder	1.4	0.68-3.02	0.9	0.66-1.22	1.0	0.71-1.39
Lifetime, but no PY misuse	3.0	1.21-7.37	0.8	0.47-1.26	0.8	0.50-1.38
Never misuse +	1.0		1.0		1.0
Rx opioid misuse/disorder
PY misuse or use disorder	0.5	0.24-1.11	0.6	0.46-0.84	1.0	0.69-1.35
Lifetime, but no PY misuse	0.9	0.43-1.82	0.7	0.50-0.99	1.0	0.67-1.55
Never misuse +	1.0		1.0		1.0

AOR=adjusted odds ratio; CI = confidence interval; NH=Non Hispanic; PY=past year; PM: past month; Rx=prescription; Variables that are presented in Tables 1–2 but not in Table 5 are not significantly associated with the outcomes and have been removed from the final multinomial multivariable logistic regression model. Each bolded adjusted odds ratio is significantly different (p<0.05) from the corresponding reference group (with + sign) within the column. N=overall unweighted sample size. n=unweighted sample size for each column.

^aSAMHSA requires that any description of overall sample sizes based on the restricted use data files be rounded to the nearest 100 to minimize potential disclosure risk. This analysis excluded those who reported other nonspecific motivation for misusing prescription stimulants (n=100). All results are based on weighted data.