NSP | PDI | p value | |
---|---|---|---|
Drug-use behaviours, including drugs injected | |||
Age of first injectiona (mean) | 20.0 | 19.5 | 0.00 |
Injections per daya,b (mean) | 1.4 | 2.1 | 0.23 |
Injection daysa,b (mean) | 17.7 | 13.8 | 0.00 |
Injection group sizea,b (mean) | 3.9 | 3.5 | 0.02 |
Drugs used in the past 30 daysd | |||
Heroin/sirets | 58.3 | 54.9 | 0.00 |
Fentanyl | 1.2 | 2.0 | 0.00 |
Street methadone | 9.9 | 13.2 | 0.00 |
Methadone diverted from opioid substitute therapy | 5.5 | 7.1 | 0.00 |
Street buprenorphine | 30.0 | 36.5 | 0.00 |
Buprenorphine diverted from opioid substitute therapy | 34.2 | 20.0 | 0.00 |
Vint (homemade amphetamines) | 15.5 | 12.7 | 0.00 |
Ephedrine | 32.3 | 23.5 | 0.00 |
Amphetamines | 5.5 | 2.3 | 0.00 |
Antihistamines in mixture | 7.7 | 2.7 | 0.00 |
Overdose in the last 30 days | 3.6 | 6.4 | 0.00 |
Drug- and sex-related risky behaviours (behaviours over the past 6 months) | |||
Shared equipment | 33.4 | 52.0 | 0.00 |
Shared syringe | 15.3 | 33.6 | 0.00 |
Used a syringe after someone | 4.6 | 26.3 | 0.00 |
Someone used syringe after | 6.4 | 25.4 | 0.00 |
Shared syringe with someone HIV positive | 0.5 | 2.9 | 0.00 |
Always used new syringe | 77.1 | 68.1 | - |
Shared instruments | 35.2 | 53.2 | 0.00 |
Exchange sex for drugs | 1.9 | 1.6 | 0.65 |
Exchange drugs for sex | 3.1 | 1.8 | 0.05 |
Exchanged sex for money | 0.7 | 0.9 | 0.82 |
Exchanged money for sex | 6.4 | 6.9 | 0.63 |
Sex with someone HIV positive | 0.0 | 0.6 | 0.05 |
Past number of blood tests for HIV?a | 3.1 | 0.6 | 0.00 |
Never tested for HIV | 0.6 | 67.0 | 0.00 |
HIV knowledge (correct answers) | |||
HIV risk is reduced if you have only one partner | 98.9 | 98.8 | 0.61 |
HIV risk is reduced if a condom is always used | 99.5 | 98.7 | 0.13 |
A person with HIV can look healthy | 91.2 | 86.8 | 0.00 |
HIV can be caught by sharing food or water with an infected person | 98.2 | 98.1 | 0.94 |
HIV can be transmitted by mosquito bite | 93.1 | 91.0 | 0.00 |
HIV and HCV testing | |||
Ever tested for HCV | 99.5 | 34.2 | 0.00 |
HIV positive on point-of-care testing at interview | 0.8 | 0.4 | 0.14 |