Table 3.

Multivariate associations between normative beliefs about party attendants’ drug use and actual use among those who intended to use each drug type.

	Ecstasy	Ketamine	Crystal Methamphetamine	GHB	Marijuana	Cocaine/ Crack	EDD	Poppers
	N=97	N=21	N=14	N=36	N=48	N=38	N=49	N=33
	OR (95%CI)	OR (95%CI)	OR (95%CI)	OR (95%CI)	OR (95%CI)	OR (95%CI)	OR (95%CI)	OR (95%CI)
Baseline Perceptions	2.0 (1.0, 3.8)	---	---	0.9 (0.2, 4.5)	8.2 (1.3, 50.6)	2.8 (0.6, 13.4)	1.6 (0.6, 4.2)	1.2 (0.4, 3.5)
Change in Perceptions Before and After Event
No change (Ref)	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0
Thought Fewer Used	0.6 (0.1, 2.6)	---	---	2.8 (0.1, 78.5)	0.2 (0.0, 1.5)	0.3 (0.0, 3.9)	0.1 (0.0, 0.6) *	0.2 (0.0, 1.5)
Thought More Used	1.0 (0.2, 4.3)	---	---	1.9 (0.1, 67.3)	---	6.6 (0.2, 217.4)	0.7 (0.1, 6.7)	2.2 (0.1, 56.8)

Note. This table represents results from multivariate logistic regression models estimated separately for each drug type. Odds ratios (OR) represent associations between respondents’ baseline perceptions of how many party-goers they thought would use and whether between baseline and follow-up they changed to think more or fewer party-goers used. These models also adjusted for past year use, past party attendance, age, and party location.

Bolded estimates are those with confidence intervals that do not contain the null value (=1.0).

^**denotes associations with p<0.05 controlling for multiple testing using the Benjamini-Hochberg correction;

^*denotes associations with p<0.10 controlling for multiple testing using the Benjamini-Hochberg correction.