Characteristics | Dien Bien | Lai Chau | Yen Bai | Total | p-value | ||||
---|---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | n | % | ||
Duration of drug use | |||||||||
  < 2 years | 2 | 2.0 | 7 | 9.6 | 4 | 4.1 | 13 | 4.8 | 0.73 |
 2–5 years | 28 | 28.3 | 21 | 28.8 | 30 | 30.6 | 79 | 29.3 |  |
 5–10 years | 35 | 35.4 | 22 | 30.1 | 33 | 33.7 | 90 | 33.3 |  |
 10–20 years | 26 | 26.3 | 18 | 24.7 | 24 | 24.5 | 68 | 25.2 |  |
  > 20 years | 8 | 8.1 | 5 | 6.9 | 7 | 7.1 | 20 | 7.4 |  |
Drug-injection in the last 30 days | 31 | 19.0 | 21 | 13.5 | 35 | 22.2 | 87 | 18.2 | 0.13 |
Re-use/sharing of needles | 13 | 12.9 | 4 | 4.0 | 10 | 10.1 | 27 | 9.0 | 0.08 |
Currently smoking | 91 | 90.1 | 92 | 92.0 | 79 | 79.8 | 262 | 87.3 | 0.02 |
Alcohol practice in the last 12 months | 66 | 65.4 | 58 | 58.0 | 39 | 39.8 | 163 | 54.5 | < 0.01 |
Using condom in the last having sex | 49 | 49.5 | 49 | 51.6 | 49 | 51.0 | 147 | 50.7 | 0.96 |
Had sex with sex workers | 16 | 16.2 | 11 | 11.6 | 21 | 21.7 | 48 | 16.5 | 0.17 |