TABLE 3.
Comparison of diagnostic characteristics
| None | Occasional | Frequent | |||||
|---|---|---|---|---|---|---|---|
| (N = 634) | (N = 403) | (N = 146) | F/X2 | p-value | OR1 | 95% CI | |
| Alcohol Abuse (%) | |||||||
| Lifetime | 35.0 | 36.8 | 34.5 | .40 | .82 | ||
| Current | 7.3 | 9.0 | 12.4 | 4.2 | .12 | ||
| Alcohol Dependence (%) | |||||||
| Lifetime | 21 | 22.9 | 20.5 | .63 | .73 | ||
| Marijuana Abuse (%) | |||||||
| Lifetime | 26.2a | 37.7b | 37.0b | 17.3 | ≤.0001 | ||
| Current | .5a | 3.2b | 19.2c | 116.3 | ≤.0001 | 7.10 | 3.56, 14.15 |
| Marijuana Dependence (%) | |||||||
| Lifetime | 14.2a | 15.7a | 26.0b | 12.3 | .002 | 1.89 | 1.20, 2.98 |
| Current | .2a | 3.0b | 20.5c | 141.5 | ≤.0001 | 4.64 | 2.61, 8.24 |
| Lifetime Substance Abuse (%) | |||||||
| Sedative | 8.7 | 7.3 | 13.7 | 5.6 | .06 | ||
| Opioid | 3.8a | 5.0a | 9.6b | 8.5 | .014 | 2.02 | .99, 4.10 |
| Hallucinogen | 5.8a | 8.8a | 15.1b | 14.3 | .001 | 1.85 | 1.05, 3.27 |
| SI Mood Disorder (%) | 6.2 | 7.2 | 7.5 | .52 | .77 | ||
| Borderline PD (%) | 2.2 | 4.0 | 3.5 | 2.9 | .24 | ||
| Antisocial PD (%) | 7.6a | 12.3b | 20.8c | 22.5 | ≤.0001 | 1.87 | 1.14, 3.10 |
| BDI (M ± SD) | 15.1 ± 10.0 | 15.6 ± 9.7 | 16.5 ± 10.7 | 1.05 | .35 |
a,b,c
Group means sharing a common letter are not significantly different (p <.05).
1
Odds of membership in frequent versus occasional using groups was computed by binary logistic regression.