Table 2 –

Self-reported drug use during participants’ night out according to planned versus unplanned use.

	Planned to Use that Night	Actual Use Among Those With and Without Planned Use
	Weighted % (n)	Unplanned Use Weighted % (n)	Planned Use Weighted % (n)	P
Any illegal drug	21.0 (46)	26.6 (61)	68.7 (41)	.0025
Illegal drug other than marijuana	14.8 (36)	17.9 (39)	62.7 (27)	.0005
Ecstasy	10.7 (25)	7.3 (14)	69.1 (19)	<.0001
Marijuana	7.3 (14)	10.7 (21)	51.7 (11)	.0297
Cocaine	3.2 (8)	4.7 (8)	13.2 (1)	.4040
LSD	1.0 (4)	1.3 (4)	100.0 (4)	<.0001
Amphetamine	0.5 (1)	1.4 (1)	0.0 (0)	--
Ketamine	0.5 (1)	0.0 (1)	0.0 (0)	--
Methamphetamine	0.4 (1)	0.0 (0)	0.0 (1)	--
MDA	0.0 (0)	1.1 (2)	0.0 (0)	--
PMA	0.0 (0)	0.4 (1)	0.0 (0)	--
Mushrooms	0.0 (0)	0.4 (1)	0.0 (0)	--

Note. Numbers in each cell of the table are percentages and counts in parentheses. Due to survey weighting, the percentages and counts do not exactly line up (e.g., 41 of 46 is 89%, not 69%). Chi-square tests compared self-reported use that night between those with and without a plan to use that night. “—” indicates that P could not be computed due to too few cases in at least one cell. LSD = lysergic acid diethylamide; MDA = 3,4-methylenedioxyamphetamine; PMA = paramethoxyamphetamine