Table 1 Association between OAT and Provision of Injecting Initiation Assistance among PWID subgroups in Vancouver, Canada (n = 1218)
|  | Did not assist others in their first injection in the past 6 months | Assisted others in their first injection in the past 6 months | Total | P-valuea |
|---|---|---|---|---|
1. High Frequency Methamphetamine IDU; Low-to-Moderate NIDUb | ||||
 OAT=No | 98 (87.5%) | 14 (12.5%) | 112 (69.1%) | 0.152 |
 OAT=Yes | 4 (96.0%) | 2 (4.0%) | 50 (30.9%) |  |
Total | 146 (90.1%) | 16 (9.9%) | 162 | Â |
2. Moderate-to-High Frequency Heroin IDU; High Frequency Heroin NIDU; and Moderate-to-High Frequency Methamphetamine IDU and NIDUb | ||||
 OAT=No | 55 (88.7%) | 7 (11.3%) | 62 (48.4%) | 0.792 |
 OAT=Yes | 57 (86.4%) | 9 (13.6%) | 66 (51.6%) |  |
Total | 112 (87.5%) | 16 (12.5%) | 128 | Â |
3. Low Frequency Use of All Drugsb | ||||
 OAT=No | 133 (97.8%) | 3 (2.2%) | 136 (46.1%) | > 0.999 |
 OAT=Yes | 156 (98.1%) | 3 (1.9%) | 159 (53.9%) |  |
Total | 289 (98.0%) | 6 (2.0%) | 295 | Â |
4. High Frequency Heroin IDU and Methamphetamine IDU, and Low-to-Moderate Frequency PO IDU and Methamphetamine NIDUb | ||||
 OAT=No | 86 (81.1%) | 20 (18.9%) | 106 (52.7%) | < 0.001 |
 OAT=Yes | 92 (96.8%) | 3 (3.2%) | 95 (47.3%) |  |
Total | 178 (88.6%) | 23 (11.4%) | 201 | Â |
5. High Frequency Heroin IDUb | ||||
 OAT=No | 96 (91.4%) | 9 (8.6%) | 105 (27.7%) | 0.121 |
 OAT=Yes | 167 (96.0%) | 7 (4.0%) | 274 (72.3%) |  |
Total | 263 (94.3%) | 16 (5.7%) | 379 | Â |
6. High Frequency Cocaine IDU and Low-to-Moderate Heroin IDUb | ||||
 OAT=No | 61 (95.3%) | 3 (4.7%) | 64 (41.8%) | > 0.999 |
 OAT=Yes | 84 (94.4%) | 5 (5.6%) | 89 (58.2%) |  |
Total | 145 (94.8%) | 8 (5.2%) | 153 | Â |