Table 2. Self-Reported Drug Use.
| Control (n=19) | MA- dependent (n=16) | Group differences | |
|---|---|---|---|
| Methamphetamine | |||
| Days used in 30 days before studya | 22.9 (8.3) | ||
| Grams used in the week before the study | 3.1 (3.5) | ||
| Years | 10.3 (8.7) | ||
| Days abstinent before testingb | 11.5 (1.4) | ||
| Marijuana | |||
| Days used in 30-days before studyc | 0.07 (0.26) | 4.25 (9.19) | t(28)=1.695 |
| Alcohol | |||
| Drinks per day | 0.47 (0.28) | 0.55 (0.55) | t(33)=−0.56 |
| Tobacco | |||
| No. of smokers/nonsmokers | 11/8 | 14/2 | χ2(1)=2.42 |
| Cigarettes per day (smokers only) | 6.3 (6.6) | 10.4 (7.9) | t(33)=−1.82c |
| Pack years | 5.4 (8.8) | 13.1 (16.3) | t(23)=−0.98 |
a
Data shown are means (standard deviation).
b
Number reflects days on ward in addition to self-reported abstinence at the time of patient intake.
c
Differences between groups did not reach statistical significance by Student's t-test (P<0.1).