Table 1.

Selected demographic characteristics of past-year hallucinogen users among adolescents aged 12–17 years (N = 55,286)

Adjusted logistic regression analysis1	Sample size	MDMA use vs. no use2	Other hallucinogen use vs. no use2	MDMA use vs. other hallucinogen use
Sample characteristics	100%	AOR (95% CI)	AOR (95% CI)	AOR (95% CI)
Gender
Male	51.1	1.0	1.0	1.0
Female	48.9	1.4 (1.13–1.70)	0.8 (0.71–0.99)	1.7 (1.31–2.08)
Age group in years
12–13	32.5	0.1 (0.05–0.11)	0.2 (0.13–0.22)	0.5 (0.27–0.73
14–15	34.4	0.4 (0.28–0.45)	0.5 (0.38–0.55)	0.8 (0.58–1.03)
16–17	33.1	1.0	1.0	1.0
Race/ethnicity
White	60.8	1.0	1.0	1.0
African American	15.2	0.4 (0.25–0.51)	0.2 (0.14–0.32)	1.7 (0.95–2.90)
American Indian/Alaska native	0.6	0.5 (0.27–1.09)	2.6 (1.53–4.43)	0.2 (0.08–0.51)
Asian/Pacific Islander/native Hawaiian	4.4	0.3 (0.13–0.88)	0.1 (0.04–0.29)	3.0 (0.76–11.75)
Multi-racial	1.6	1.2 (0.67–2.27)	1.2 (0.68–2.20)	1.0 (0.40–2.53)
Hispanic	17.4	0.7 (0.47–0.92)	0.7 (0.48–0.93)	1.0 (0.610–1.56)
Student status
Yes	98.5	1.0	1.0	1.0
No	1.5	3.5 (2.23–5.64)	1.5 (1.00–2.18)	2.4 (1.37–4.17)
Family income
$0–$19,999	17.7	1.0 (0.69–1.52)	1.3 (0.98–1.77)	0.8 (0.48–1.27)
$20,000–$39,999	22.3	1.1 (0.78–1.41)	1.0 (0.75–1.33)	1.1 (0.70–1.58)
$40,000–$74,999	29.7	1.3 (1.00–1.65)	1.1 (0.87–1.37)	1.2 (0.83–1.68)
$75,000 or more	30.3	1.0	1.0	1.0
Survey year
2004	33.1	1.0	1.0	1.0
2005	33.8	0.8 (0.56–1.00)	0.9 (0.71–1.09)	0.8 (0.59–1.23)
2006	33.1	1.0 (0.76–1.31)	0.7 (0.54–0.86)	1.5 (1.02–2.11)

¹The adjusted multinomial logistic model included all the independent variables listed in the first column.

²Each hallucinogen use group was compared with adolescents who reported no use of any hallucinogens in the past year.

AOR: adjusted odds ratio; CI: confidence intervals; Boldface: p < 0.05.