Table 2.
Demographics and drug use characteristics by latent class.
| Older, Less Educated Polysubstance |
Older Crack Smoke / Nasal Heroin |
Less Educated Heroin Injectors |
More Educated Nasal Heroin |
Younger Multi- injectors |
|
|---|---|---|---|---|---|
|
| |||||
| M (SE) / N (%) | M (SE) / N (%) | M (SE) / N (%) | M (SE) / N (%) | M (SE) / N (%) | |
| Age*** | 36.42 (0.98) b | 36.01 (0.48) a,b | 32.65 (0.75) a | 32.43 (1.04) a | 28.90 (0.68) c |
| Highest Grade Completed*** | 10.17 (0.28) b | 11.16 (0.15) c | 10.29 (0.18) b | 12.44 (0.16) a | 10.87 (0.16) c |
| Female** | 22 (44.0%) | 82 (51.2%) | 61 (43.3%) | 25 (35.7%) | 39 (30.5%) |
| African-American*** | 31 (62.0%) | 125 (78.1%) | 47 (33.3%) | 49 (70.0%) | 22 (17.2%) |
| Currently in Drug Treatment** | 17 (34.0%) | 42 (26.6%) | 48 (35.3%) | 16 (23.9%) | 16 (12.6%) |
| Lifetime History of Regular Use | |||||
| Drink Alcohol** | 34 (68.0%) | 101 (63.5%) | 65 (46.4%) | 37 (52.9%) | 81 (64.3%) |
| Smoke Marijuana*** | 29 (58.0%) | 92 (57.5%) | 66 (48.2%) | 34 (49.3%) | 94 (73.4%) |
| Smoke Crack*** | 22 (44.0%) | 106 (66.2%) | 20 (14.2%) | 11 (15.7%) | 36 (28.1%) |
| Nasal Heroin** | 28 (56.0%) | 99 (61.9%) | 63 (44.7%) | 46 (65.7%) | 79 (61.7%) |
| Inject Heroin*** | 40 (80.0%) | 39 (24.4%) | 104 (73.8%) | 14 (20.0%) | 119 (93.0%) |
| Inject Cocaine*** | 20 (40.0%) | 9 (8.3%) | 29 (20.6%) | 1 (1.4%) | 49 (38.3%) |
| Inject Speedball*** | 24 (48.0%) | 13 (8.1%) | 27 (19.1%) | 4 (5.7%) | 50 (39.1%) |
*
Omnibus test (degrees of freedom = 4), p < .05
**
Omnibus test (df = 4), p < .01
***
Omnibus test (df = 4), p < .001
Subscripts with same letter are not significantly different at p < .05, as revealed by post-hoc pairwise tests (df = 1).
If at least one class is significantly lower than another, class(es) with lowest number on variable shown in italics.
If at least one additional class is significantly higher than another, class(es) with highest number on variable shown in bold.