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Table 1 Association between OAT and Provision of Injecting Initiation Assistance among PWID subgroups in Vancouver, Canada (n = 1218)

From: The influence of poly-drug use patterns on the association between opioid agonist treatment engagement and injecting initiation assistance

  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  
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  
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  
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  
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  
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  
  1. aFisher’s exact test
  2. bThe class refers to activities during the previous six months
  3. IDU Injection Drug Use, NIDU Non-Injection Drug Use, OAT Opioid Agonist Treatment