Table 2.

Proportion of sample using each substance in the past three months, and the average number of days using alcohol and other substances in the past three months in total sample and each substance specific subsample

Scale	Proportion Total sample n=515 %	Mean Total sample n=515a M(SD)	Synthetic n=284b M(SD)	Toad n=148c M(SD)	Plant Extract/Yopo n=83d M(SD)	F	Post-hoc
Alcohol	77%	16.22 (23.59)	16.96 (24.06)	14.33 (21.72)	16.94 (25.13)	0.63
MDMA/ecstasy	32	0.80 (4.27)	0.65 (1.47)	0.51 (1.15)	1.76 (10.21)	2.49
Cocaine	23	1.06 (5.09)	1.24 (5.88)	0.67 (3.91)	1.07 (3.66)	0.57
Methamphetamine	21	2.67 (11.74)	2.73 (11.25)	1.86 (10.73)	3.95 (14.88)	0.76
Marijuana/Cannabis	78	34.22 (37.43)	37.11 (38.37)	24.33 (32.77)	41.60 (38.82)	7.43**	S = P > T
Synthetic Cannabinoids	9	0.09 (0.98)	0.09 (0.97)	0.01 (0.09)	0.25 (1.65)	1.49
Mushrooms/Psilocybin	41	1.22 (4.63)	1.07 (5.66)	1.19 (1.98)	1.80 (3.78)	0.73
Ayahuasca	19	0.52 (3.19)	0.36 (3.70)	0.87 (2.70)	0.48 (1.62)	1.12
DMT	34	1.37 (5.29)	1.16 (4.02)	1.05 (2.58)	2.67 (10.34)	2.77
San Pedro	15	0.14 (0.83)	0.05 (0.21)	0.25 (1.39)	0.31 (0.90)	4.43*	NS
Peyote	13	0.11 (0.67)	0.06 (0.34)	0.09 (0.34)	0.32 (1.49)	4.43*	S < P
Iboga/Ibogaine	10	0.08 (0.81)	0.06 (0.92)	0.10 (0.66)	0.08 (0.59)	0.09
LSD/Acid	44	1.87 (5.56)	1.58 (3.19)	1.82 (7.56)	3.00 (7.78)	1.92
Other psychedelics	25	0.60 (1.98)	0.69 (2.21)	0.14 (0.43)	1.07 (2.53)	5.86**	S = P > T
Psychedelic Res. Chem.	25	0.76 (3.13)	1.09 (3.88)	0.11 (0.58)	0.66 (2.41)	4.39*	S > T
Opioid Res. Chem.	11	0.07 (0.60)	0.08 (0.73)	0.02 (0.26)	0.10 (0.51)	0.47
Benzo Res. Chem.	18	1.09 (5.86)	1.61 (7.49)	0.13 (0.96)	0.86 (3.15)	2.89
Dissociative Res. Chem.	16	0.67 (4.52)	0.90 (5.29)	0.04 (0.26)	0.93 (5.32)	1.72
Stimulant Res. Chem.	14	0.35 (2.01)	0.51 (2.54)	0.14 (0.94)	0.07 (0.35)	2.33
Synthetic Cathinones	13	0.23 (1.71)	0.37 (2.24)	0.02 (0.26)	0.04 (0.20)	2.34
Street Opioids	16	1.06 (7.43)	1.33 (9.26)	0.67 (4.15)	0.69 (2.51)	0.44
Prescription Opioids	29	4.15 (15.37)	4.12 (14.95)	2.41 (10.75)	7.38 (22.26)	2.40
Prescription Stimulants	25	4.37 (15.80)	4.79 (16.32)	2.01 (10.64)	6.94 (20.41)	2.47
Tobacco	56	25.12 (36.99)	23.72 (36.12)	19.92 (34.46)	40.10 (41.28)	7.50**	S = T < P
Benzos	35	4.57 (14.07)	6.28 (16.71)	0.84 (3.22)	4.79 (13.88)	6.67**	S > T
Ketamine	23	0.97 (5.40)	1.40 (6.89)	0.37 (2.24)	0.46 (1.65)	2.00
Inhalants	16	0.35 (2.01)	0.46 (2.55)	0.04 (0.26)	0.48 (1.26)	2.07
PCP	11	0.25 (4.10)	0.36 (5.36)	0.09 (0.88)	0.17 (0.88)	0.21

Note. When the standard deviation is greater than the mean the data is skewed do to a large proportion of zeros.

Abbreviations: Res. Chem. = Research Chemicals; PCP = Phencyclidine; Benzo = Benzodiazapine; LSD = Lysergic acid diethylamide; DMT = Dimethyltryptamine; MDMA = 3,4-Methylenedioxymethamphetamine

^*p < 0.05;

^**p < 0.01;

^***p < 0.001;

^arange 466-505

^brange 267-282

^crange 126-141

^drange 70-82