Table 1.
Demographic characteristics by class membership
| Demographics | Total | No Use | Class 1 Exclusive Alcohol Use |
Class 2 Alcohol and Marijuana |
Class 3 Alcohol and Cocaine/Crack |
Class 4 Multiple- Substance Use |
Test Statistic |
|---|---|---|---|---|---|---|---|
| n = 557 | n = 88 | n = 106 | n = 85 | n = 146 | n = 132 | ||
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| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | ||
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| Gender/Sexual Identity | χ2(12) = 22.1* | ||||||
| Gay/Bisexual Men | 224 (40.4) | 30 (34.1)a | 43 (40.6)ab | 37 (43.5)ab | 46 (31.5)a | 68 (51.5)b | |
| Straight Men | 156 (28.1) | 25 (28.4)ab | 24 (22.6)a | 23 (27.1)ab | 54 (37.0)b | 30 (22.7)a | |
| Lesbian/Bisexual Women | 27 (4.9) | 3 (3.4) | 5 (4.7) | 5 (5.9) | 5 (3.4) | 9 (6.8) | |
| Straight Women | 148 (26.7) | 29 (33.0)a | 33 (31.1)a | 20 (23.5)ab | 41 (28.1)ab | 25 (18.9)b | |
| Race and Ethnicity | † | ||||||
| Black/African American | 382 (68.6) | 60 (68.2) | 64 (60.4) | 54 (63.5) | 103 (70.5) | 101 (76.5) | |
| White/European | 63 (11.3) | 8 (9.1) | 16 (15.1) | 14 (16.5) | 11 (7.5) | 14 (10.6) | |
| Latino | 97 (17.4) | 16 (18.2) | 25 (23.6) | 15 (17.6) | 27 (18.5) | 14 (10.6) | |
| Other | 15 (2.7) | 4 (4.5) | 1 (0.9) | 2 (2.4) | 5 (3.4) | 3 (2.3) | |
| Partner Status | χ2(4) = 3.8 | ||||||
| Single | 322 (58.0) | 46 (52.3) | 68 (64.2) | 51 (60.0) | 84 (57.5) | 73 (55.3) | |
| Partnered | 233 (42.0) | 42 (47.7) | 36 (34.0) | 34 (40.0) | 62 (42.5) | 59 (44.7) | |
| Medication non-adherence | χ2(4) = 44.5** | ||||||
| ≤ 90% adherent | 163 (29.3) | 7 (8.0)a | 17 (16)a | 30 (35.3)b | 52 (35.6)b | 57 (43.2)b | |
| > 90% adherent | 393 (70.7) | 80 (90.9) | 89 (84) | 55 (64.7) | 94 (64.4) | 75 (56.8) | |
| Viral Load | χ2(4) = 22.7** | ||||||
| Undetectable (VL <200) | 398 (76.1) | 66 (82.5)a | 82 (84.5)a | 71 (87.7)a | 93 (65.5)b | 86 (69.9)b | |
| Detectable | 125 (23.9) | 14 (17.5) | 15 (15.5) | 10 (12.3) | 49 (34.5) | 37 (30.1) | |
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| M (SD) | M (SD) | M (SD) | M (SD) | M (SD) | M (SD) | ||
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| Age (years) | 55.0 (4.4) | 55.5 (4.3) | 55.1 (4.6) | 55.5 (4.8) | 54.7 (4.1) | 54.6 (4.4) | F (4, 552) = 1.2 |
| Number of Missed Medication Days | 2.4 (5.2) | 1.3 (4.4)a | 1.3 (1.9)a | 2.9 (4.2)b | 4.3 (7.7)b | 3.5 (4.9)b | χ2(4) = 45.2** |
| Medication Duration (years) | 12.1 (7.0) | 13.8 (7.2)a | 12.7 (6.6)ab | 12.6 (6.4)ab | 11.2 (7.2)b | 11.2 (6.9)b | F (4, 551) = 2.7* |
*
p <.05
**
p ≤ .01
†
An overall χ2 value is not reported because 5 (25%) cells were associated with expected values less than 5. Row-by-row comparisons found no significant differences at p < .05.
Note: some variables have missing data. Where omnibus tests of between group differences were significant, group-by-group comparisons were evaluated using the LSD post hoc test. Groups with different superscripts differ at p < .05. Groups which share a common superscript do not.