Table 2.
Characteristics of the different RDS subpopulations according to sexual/injection risk profiles (n = 507).
| N (%) | Profile 1 & 3 High-risk sexual behaviour N = 37 N (%) |
Profile 2 High-risk injection practices N = 22 N (%) |
Profile 4 Safe injection and safe sex N = 86 N (%) |
Profile 5 Safe injection and low sexual activity N = 362 N (%) |
P valuea |
|---|---|---|---|---|---|
| Gender: male | 27 (73) | 20 (91) | 62 (72) | 354 (98) | <0.01 |
| Age: ≤35 years | 26 (70) | 14 (64) | 53 (62) | 173 (48) | 0.01 |
| Household registration in Haiphong: Yes | 31 (84) | 17 (77) | 78 (91) | 343 (95) | 0.003 |
| Median injection duration: ≤ 8 years | 26 (70) | 12 (55) | 60 (70) | 195 (54) | 0.02 |
| Non-injected drugs: methamphetamine | 16 (43) | 6 (27) | 26 (30) | 71 (20) | 0.004 |
| Hazardous drinking (Audit-Cb) | 11 (30) | 3 (14) | 33 (38) | 93 (26) | 0.05 |
| Binge drinking (Audit-Cc) | 8 (22) | 1 (5) | 11 (13) | 29 (8) | 0.04 |
| Helped someone for the first injection: Yes | 8 (22) | 8 (36) | 8 (9) | 53 (15) | 0.01 |
| Has already had sexual intercourse: Yes | 37 (100) | 10 (46) | 86 (100) | 110 (30) | <0.01 |
| One or several primary partners: Yes | 25 (68) | 10 (46) | 56 (65) | 110 (30) | <0.01 |
| At least one casual partner: Yes | 15 (41) | 1 (5) | 13 (15) | 0 (0) | <0.01 |
| Has already received money for sex: Yes | 23 (62) | 3 (14) | 35 (41) | 0 (0) | <0.01 |
| Has already paid for sex: Yes | 6 (16) | 4 (18) | 21 (24) | 0 (0) | <0.01 |
| Compulsory or voluntary stay in the past: Yes | 14 (38) | 6 (27) | 38 (44) | 192 (53) | 0.03 |
| Worries too much about things: Yes | 15 (41) | 11 (50) | 36 (42) | 107 (30) | 0.03 |
| Past suicide attempt: Yes | 5 (13.5) | 6 (27) | 11 (13) | 31 (9) | 0.04 |
a
Fisher’s exact test or Chi square test.
b
Audit-c score ≥3 in women and ≥4 in men.
c
6 or more drinks on one occasion daily or almost daily, weekly or monthly.