Table 1.
Socio-demographic, behavioral, and psychosocial characteristics of trajectory groups after the groups are identified from Nagin’s group-based modeling
| Low (N=46) | Medium (N=164) | High (N=27) | P | |
|---|---|---|---|---|
| White race % (n) | 80.4 (37) | 92.1 (151) | 100 (27) | 0.013a |
| HIV positive % (n) | 60.9 (28) | 38.4 (63) | 40.7 (11) | 0.024 |
| Cohort enrollment 2001–2003 (late)% (n) | 21.7 (10) | 14.0 (23) | 11.1 (3) | 0.367a |
| Education in years mean (sd) | 15.1 (2.8) | 15.3 (2.4) | 15.7 (2.5) | 0.641 |
| Any annual income <$20K % (n) | 47.8 (22) | 32.3 (53) | 25.9 (7) | 0.089 |
| Any current smoke % (n) | 30.4 (14) | 36.0 (59) | 22.2 (6) | 0.335 |
| Average no. of drinks per week mean (sd) | 2.9 (6.3) | 5.3 (10.1) | 4.4 (5.2) | 0.298 |
| Any binge drinking % (n) | 8.7 (4) | 17.1 (28) | 18.5 (5) | 0.344a |
| Any marijuana % (n) | 32.6 (15) | 38.4 (63) | 63.0 (17) | 0.028 |
| Any poppers % (n) | 6.5 (3) | 43.9 (72) | 55.6 (15) | <0.001 |
| Any crack cocaine % (n) | 0 (0) | 8.5 (14) | 14.8 (4) | 0.023a |
| Any other cocaine % (n) | 6.5 (3) | 11.0 (18) | 22.2 (6) | 0.132a |
| Any methamphetamine % (n) | 2.2 (1) | 3.7 (6) | 11.1 (3) | 0.154a |
| Any ecstasy % (n) | 0 (0) | 6.7 (11) | 3.7 (1) | 0.191a |
| Any Viagra % (n) | 6.5 (3) | 30.5 (5) | 66.7 (18) | <0.001 |
| Any CES-D ≥ 16 % (n) | 50.0 (23) | 48.2 (79) | 44.4 (12) | 0.900 |
| Any CES-D ≥ 22 % (n) | 34.8 (16) | 30.5 (50) | 33.3 (9) | 0.841 |
| Average NUAII mean (sd) | 0.0 (0.0) | 0.4 (0.6) | 2.1 (2.8) | <0.001 |
| Average NUARI Mean (sd) | 0.0 (0.0) | 0.3 (0.7) | 1.6 (2.5) | <0.001 |
NUAII= number of unprotected anal insertive intercourse in the past 6 months, NUARI=number of unprotected receptive intercourse partner in the past 6 months,
a
Fisher’s exact test