Table 1:
Demographic and serological characteristics by site
| Total (n=2l88) | Coast (n=842) | Nairobi (n=8l7) | West (n=529) | |
|---|---|---|---|---|
| Age, years | 32 (28–36) | 32 (29–37) | 32 (27–37) | 30 (27–33) |
| Sex | ||||
| Male | 1984 (91%) | 759 (90%) | 711 (87%) | 514 (97%) |
| Female | 204 (9%) | 83 (10%) | 106 (13%) | 15 (3%) |
| Ever incarcerated | 1373 (63%) | 613 (73%) | 649 (79%) | 111 (21%) |
| Age at first injection, years | 27 (24–31) | 28 (24–32) | 27 (22–32) | 26 (24–30) |
| Years injecting | 3 (2–6) | 3 (1–6) | 3(2–6) | 3(2–5) |
| Number of injections in the past month | 60 (30–90) | 90 (60–90) | 60 (30–90) | 30 (30–60) |
| Number of days injecting in the past month | 30 (30–30) | 30 (30–30) | 30 (30–30) | 30 (30–30) |
| Median number of injections per day in the past month | 2 (1–3) | 3 (2–3) | 3(2–3) | 1 (1–2) |
| PWID social network size | 20 (10–30) | 20 (10–30) | 15 (10–20) | 20 (15–30) |
| Needle sharing at last injection | ||||
| Receptive | 59 (3%) | 35 (4%) | 15 (2%) | 9 (2%) |
| Distributive | 66 (3%) | 37 (4%) | 20 (2%) | 9 (2%) |
| Cooker sharing at last injection | ||||
| Receptive | 216 (10%) | 45 (5%) | 162 (20%) | 9 (2%) |
| Distributive | 214 (10%) | 45 (5%) | 162 (20%) | 7 (1%) |
| Cotton sharing at last injection | ||||
| Receptive | 204 (9%) | 35 (4%) | 161 (20%) | 8 (2%) |
| Distributive | 204 (9%) | 35 (4%) | 163 (20%) | 6 (1%) |
| Water sharing at last injection | ||||
| Receptive | 216 (10%) | 54 (6%) | 154 (19%) | 8 (2%) |
| Distributive | 214 (10%) | 51 (6%) | 156 (19%) | 7 (1%) |
| Regular use of syringe with detachable needle | 1025 (47%) | 761(90%) | 33 (4%) | 231 (44%) |
| Used same syringe more than twice | 100 (5%) | 45 (5%) | 35 (4%) | 20 (4%) |
| NSP service use | ||||
| Accessed NSP in past year | 1377 (63%) | 716 (85%) | 661 (81%) | 354(67%) |
| Main source of syringes neither NSP nor pharmacy | 256 (12%) | 45 (5%) | 153 (19%) | 58 (11%) |
| Number of needles received last visit | 9(3–10) | 9(3–10) | 9(0–12) | 7(0–30) |
| Number of needles returned last visit | 3(0–9) | 6(2–9) | 0(0–6) | 0 (0–0) |
| Average number of NSP visits per week | 7 (2–7) | 7 (3–7) | 7 (2–7) | 7 (0–7) |
| Average number of exchanges per week | 7 (0–7) | 7 (7–7) | 7 (0–7) | 7 (0–7) |
| Anti-HCV positive | 291 (13%) | 183 (22%) | 105 (13%) | 3 (1%) |
| HIV positive | 275 (13%) | 131 (16%) | 121 (15%) | 23 (4%) |
Data are median (IQR) or n (%). NSP=needle and syringe programme.