Table 1.
Baseline Substance Use History and Risk Behavior History for the Study Entry Sample, the Samples that Completed and Failed to Complete Treatment, and Reinforcement-based Treatment + Women’s Coop (RBT+WC) and Usual Care (UC) Samples at Baseline (N=128)
| Study entry Sample (N=128) | Completed Treatment Sample (n=113) | Failed to Complete Treatment Sample (n=15) | Test of Treatment Completion Status | RBT+WC Sample (n=64) | UC Sample (n=64) | Test of Treatment Condition | |
|---|---|---|---|---|---|---|---|
| Variable | M (SD) or n (%) | p | M (SD) or n (%) | P | |||
| Age of first use: | |||||||
| Tobacco (n=125) | 18.3 (5.2) | 18.4 (5.3) | 17.5 (4.1) | 0.515 | 18.0 (5.1) | 18.6 (5.3) | 0.549 |
| Alcohol (n=123) | 16.9 (3.2) | 16.9 (3.2) | 16.3 (3.3) | 0.509 | 16.8 (3.6) | 16.9 (2.9) | 0.928 |
| First substance use excluding tobacco and alcohol | 21.4 (6.2) | 21.5 (6.4) | 20.6 (5.1) | 0.589 | 20.6 (5.8) | 22.2 (6.6) | 0.141 |
| First injection (n=127) | 26.3 (8.1) | 26.6 (8.3) | 24.3 (6.6) | 0.295 | 26.6 (8.5) | 26.0 (7.7) | 0.697 |
| Assistance with first injection: | |||||||
| Alone | 11 (8.6%) | 10 (8.9%) | 1 (6.7%) | 6 (9.4%) | 5 (7.8%) | ||
| Main sex partner | 26 (20.3%) | 24 (21.2%) | 2 (13.3%) | 12 (18.8%) | 14 (21.9%) | ||
| Secret sex partner | 3 (2.3%) | 3 (2.7%) | 0 | 3 (4.7%) | 0 | ||
| Family member | 1 (0.8%) | 1 (0.9%) | 0 | 1 (1.6%) | 0 | ||
| Friend | 75 (58.6%) | 63 (55.8%) | 12 (80.0%) | 35 (54.7%) | 40 (62.5%) | ||
| Past-30-day amount of money spent on drugs | 417.7 (892.7) | 328.0 (534.5) | 1081.0 (2082.2) | 0.002 | 554.1 (1202.7) | 276.9 (315.4) | 0.081 |
| Lifetime needle/syringe sharing: yes | 43 (33.6%) | 36 (31.9) | 7 (46.7%) | † | 20 (31.3%) | 23 (35.9%) | 0.708 |
| Past-30-day number of times sharing needles/syringes | 1.0 (8.9) | 1.1 (9.4) | 0.4 (1.5) | 0.777 | .3 (1.3) | 1.7 (12.5) | 0.362 |
| Past-30-day number of times sharing other equipment | 1.0 (4.1) | 1.0 (4.3) | 1.1 (2.8) | 0.948 | 1.6 (5.6) | 0.4 (1.7) | 0.098 |
| Source of needles/syringes: | † | † | |||||
| Harm reduction program | 2 (1.6%) | 1 (0.9%) | 1 (6.7%) | 0 | 2 (3.1%) | ||
| Pharmacy | 118 (92.2%) | 105 (92.9%) | 13 (86.7%) | 61 (95.3%) | 57 (89.1%) | ||
| Main sexual partner | 5 (3.9%) | 4 (3.5%) | 1 (6.7%) | 2 (3.1%) | 3 (4.7%) | ||
| Friends | 1 (0.8%) | 1 (0.9%) | 0 | 0 | 1 (1.6%) | ||
| Other | 2 (1.6%) | 2 (1.8%) | 0 | 1 (1.6%) | 1 (1.6%) | ||
| Ever injected from preloaded (by someone else) syringe: yes | 94 (73.4%) | 82 (72.6%) | 12 (80.0%) | † | 47 (73.4%) | 47 (73.4%) | 1 |
| Lifetime number of overdose episodes | 1.4 (2.6) | 1.4 (2.7) | 1.2 (1.6) | 0.724 | 1.2 (1.8) | 1.6 (3.2) | 0.339 |
| Perceived treatment need: yes | 21 (16.4%) | 19 (16.8%) | 2 (13.3%) | † | 8 (12.5%) | 13 (20.3%) | 0.34 |
Note: Test of Treatment Completion Status compares the 113 participants who completed treatment to the 15 participants who failed to complete treatment at baseline. Test of Treatment Conditions compares the 64 participants in the RBT+WC condition to the 64 participants in the UC condition at baseline. Amount of money spent on drugs has been converted into $USD.
†
indicates that the expected cell count was less than 5 in one or more cells.