Table 2.
(A) Self-reported prevalence of drug use. (B) Self-reported severity of drug use.
| A
| ||||||
|---|---|---|---|---|---|---|
| Drug | Control (n = 28)
|
Experimental (n = 28)
|
||||
| Lifetime | Past year | Past month | Lifetime | Past year | Past month | |
| Heroin | 100 (28) | 25 (7) | 11 (3) | 100 (28) | 50 (14) | 4 (1) |
| Alcohol | 96(27) | 61 (17) | 36 (10) | 96 (27) | 54 (15) | 43 (12) |
| Cocaine | 93 (26) | 43 (12) | 21 (6) | 89 (25) | 46 (13) | 21 (6) |
| Caffeine | 86 (24) | 86 (24) | 86 (24) | 93 (26) | 89 (25) | 89 (25) |
| Nicotine | 68 (19) | 61 (17) | 61 (17) | 96 (27) | 93 (26) | 82 (23) |
| Cannabis | 79 (22) | 21 (6) | 18 (5) | 89 (25) | 25 (7) | 18 (5) |
| Benzodiazepine | 32 (9) | 18 (5) | 11 (3) | 46 (13) | 14 (4) | 4 (1) |
| Hallucinogen | 7 (2) | 0 | 0 | 11 (3) | 0 | 0 |
| Amphetamine | 0 | 0 | 0 | 0 | 0 | 0 |
| B
| ||||||
|---|---|---|---|---|---|---|
| Drug | Control
|
Experimental
|
||||
| Years used | $ per day | $ per week | Years used | $ per day | $ per week | |
| Heroin | 18.3 (8.1) | 67 (78) | 419 (487) | 18.6 (10.0) | 108 (82) | 738 (590) |
| Cocaine | 17.4 (10.3) | 43 (62) | 216 (442) | 16.6 (11.1) | 52 (83) | 316 (603) |
Note: Values represent % (n) of participants reporting use. Data are missing for amphetamine use at all times for one control participant and for past month heroin use for one experimental participant. Groups did not differ on reported drug use history with the exception of nicotine in the past year (X2[1] = 8.114, p = .004] and lifetime (X2[1] = 7.791, p = .005).
Values represent Mean (Standard Deviation). Data are missing from two control and three experimental participants regarding cocaine spending. Groups did not differ on years of drug use or money spent on cocaine. The experimental group reported spending significantly more money per week on heroin than the control group (t[54] = −2.207, p = .032).