Table 2.

Prevalence of drug use before and after correction given type-in responses.

	Past-year prevalence, Weighted % (n)	Adjusted past-year prevalence, Weighted % (n)	Change in prevalence after adjustment, Weighted % (n)
Any drug	77.9 (840)	78.0 (843)	0.1 (3)
Marijuana	64.8 (735)	65.1 (742)	0.3 (7)
Ecstasy/MDMA/Molly	30.5 (421)	31.1 (423)	0.6 (2)
Powder cocaine	23.3 (345)	24.3 (355)	1.0 (10)
LSD	18.0 (235)	18.3 (240)	0.3 (5)
Shrooms (psilocybin)	14.9 (220)	14.9 (221)	0.0 (1)
Amphetamine	9.8 (147)	10.6 (156)	0.8 (9)
Ketamine	9.4 (166)	9.4 (166)	0.0 (0)
Prescription opioids	9.4 (99)	9.7 (102)	0.3 (3)
“Bath Salts”	6.0 (39)	6.0 (39)	0.0 (0)
Benzodiazepines	5.1 (77)	5.6 (78)	0.5 (1)
Synthetic cannabinoids	3.8 (25)	3.8 (25)	0.0 (0)
GHB	2.3 (47)	2.3 (47)	0.0 (0)
Methamphetamine	2.1 (38)	2.1 (39)	0.0 (1)
Tryptamines	2.1 (33)	2.1 (33)	0.0 (0)
2C Series	1.1 (25)	1.1 (25)	0.0 (0)
NBOMe	1.0 (9)	1.0 (9)	0.0 (0)
Other new psychedelics	0.0 (0)	0.0 (0)	0.0 (0)

Use of amphetamine, benzodiazepines, and opioids refers to nonmedical use. Adjusted prevalence includes type-in responses of drugs in which use was unreported earlier on the survey.