Table 1.
Sample Characteristics and LDQ Scores for each Primary Substance of Use
| Primary Substance |
n | Mean age (SD) |
% Female | Mean LDQ (SD) |
Median LDQ |
LDQ Range |
|---|---|---|---|---|---|---|
| Alcohol | 84 | 20.7 (1.7) | 36.9% | 16.55 (7.60) | 17.0 | 1–30 |
| Cannabis | 79 | 20.1 (1.5) | 13.9% | 14.11 (8.29) | 15.0 | 0–30 |
| Opiates | 68 | 20.6 (1.5) | 22.1% | 21.79 (6.72) | 23.5 | 6–30 |
| Stimulants | 53 | 19.9 (1.5) | 35.8% | 21.30 (7.79) | 23.0 | 5–30 |
| Benzodiazepines | 6 | 20.5 (0.8) | 16.7% | 19.50 (9.27) | 20.5 | 3–28 |
| Other | 6 | 20.0 (2.0) | 0.0% | 16.33(10.09) | 15.0 | 4–28 |
| Total* | 296 | 20.4 (1.6) | 26.0% | 18.01 (8.28) | 19.0 | 0–30 |
*
Four individuals did not report a primary substance