Characteristic | Baseline completed (n = 54) | 6 months completed (n = 41) | p value | ||
---|---|---|---|---|---|
Median | IQR | Median | IQR | ||
Substance | |||||
 Tobacco | 18 | 15–24 | 22 | 18–24 | 0.4782 |
 Opioids | 37 | 33–39 | 9 | 3–23 |  < 0.0001 |
 Alcohol | 0 | 0–6 | 2 | 0–6 | 0.4388 |
 Cannabis | 12.5 | 3–23 | 21 | 17–26 | 0.0003 |
 Cocaine | 0 | 0–3 | 6 | 0–14 | 0.0541 |
 Amphetamine type stimulant | 0 | 0 | 0 | 0 | 0.1288 |
Total | 81.5 | 67–93 | 67 | 49–90 | 0.0052 |
 | n | % | n | % | p value |
Never injected | 41 | 76% | 28 | 68% | 0.1573 |
Last injected > 3 months ago | 4 | 7% | 8 | 20% | 0.0956 |
Injected < 3 months ago | 9 | 17% | 5 | 12% | 0.6547 |
Injection frequency among those who injected in last 3Â months | |||||
  < once weekly or < 3 days in a row | 3 | 33% | 2 | 40% | 0.5637 |
  > once weekly or > 3 days in a row | 6 | 67% | 3 | 60% | 1.0000 |