Table 2.
Covariates of injection behaviors on polysubstance use among participants.
| 2a. Polysubstance Use | |||
|---|---|---|---|
| Polysubstance Use (n = 67, 70.5%) | No Polysubstance Use (n = 28, 29.5%) | p-Value | |
| Age * | 36.5 [±6.3] | 36.4 [±7.2] | 0.954 |
| Male | 59 (88.1%) | 22 (78.6%) | 0.234 |
| Nairobi ^ | 7 (10.5%) | 6 (21.4%) | 0.156 |
| On MAT | 45 (67.2%) | 21 (75.0%) | 0.45 |
| Ever held in jail | 63 (94.0%) | 26 (92.9%) | 0.83 |
| Age of first injection * | 27.8 [±5.9] | 26.6 [±7.7] | 0.448 |
| Years injecting | 8.6 [±5.5] | 9.5 [±6.9] | 0.521 |
| Inject in the last 30 days | 65 (97.0%) | 22 (78.6%) | 0.008 |
| Number of times injected in last 30 days * | 90.3 [±32.6] | 69.2 [±47.7] | 0.039 |
| Number of days injected in last 30 days * | 28.4 [±6.8] | 22.2 [±13.1] | 0.024 |
| Number of times using syringe before changing it * | 1.2 [±1.1] | 1.6 [±1.7] | 0.356 |
| How many other PWID do you know (by face or name)? | 17.8 [±14.3] | 21.8 [±24.3] | 0.419 |
| What do you think about reducing your injecting drug use, or stopping entirely? | |||
| Have already stopped or reduced | 19 (28.4%) | 10 (35.7%) | 0.478 |
| Have not yet stopped or reduced | 48 (71.6%) | 18 (64.3%) | |
| Needle/syringe used at last injection was previously used by someone else | 9 (13.4%) | 2 (7.1%) | 0.382 |
| HIV-positive | 27 (40.3%) | 11 (39.3) | 0.927 |
| 2b. Polysubstance exclusive of just heroin and cannabis (PSU-EC) | |||
| Polysubstance use (n = 34, 35.8%) | No polysubstance use (n = 61, 62.4%) | p-value | |
| Age * | 35.7 [±6.1] | 36.9 [±6.8] | 0.408 |
| Male | 28 (82.4%) | 53 (86.9%) | 0.55 |
| Nairobi ^ | 1 (2.9%) | 12 (19.7%) | 0.028 |
| On MAT | 21 (61.8%) | 45 (73.8%) | 0.223 |
| Ever held in jail | 33 (97.1%) | 56 (91.8%) | 0.415 |
| Age of first injection * | 27.4 [±5.7] | 27.5 [±6.9] | 0.95 |
| Years injecting | 8.3 [±5.4] | 9.2 [±6.2] | 0.44 |
| Inject in the last 30 days | 33 (97.1%) | 54 (88.5%) | 0.252 |
| Number of times injected in last 30 days * | 94.4 [±34.0] | 78.4 [±40.1] | 0.052 |
| Number of days injected in last 30 days * | 28.3 [±6.8] | 25.6 [±10.6] | 0.126 |
| Number of times using syringe before changing it * | 1.4 [±1.6] | 1.3 [±1.2] | 0.687 |
| How many other PWID do you know (by face or name)? | 17.7 [±16.8] | 19.7 [±18.4] | 0.602 |
| What do you think about reducing your injecting drug use, or stopping entirely? | |||
| Have already stopped or reduced | 9 (26.5%) | 20 (32.8%) | 0.522 |
| Have not yet stopped or reduced | 25 (73.5%) | 41 (67.2%) | |
| Needle/syringe used at last injection was previously used by someone else | 5 (14.7%) | 6 (9.8%) | 0.477 |
| HIV-positive | 15 (44.1%) | 23 (37.7) | 0.541 |
Note: * mean, standard deviation. ^ Nairobi as the reference variable.