Variable | Incident cases (n = 94) | Uninfected subjects (n = 394) | p | 95% CI |
---|---|---|---|---|
   Mean age; years (SD) | 28 (±7) | 27 (±7) | 0.08 |  |
   Male gender; No. (%) | 51 (54) | 267 (68) | 0.01 | 0.4 - 0.9 |
   ATSI; No. (%) | 26 (28) | 92 (23) | 0.38 | 0.8 - 2.1 |
   Less than 10 years education; No. (%) | 71 (76) | 302 (77) | 0.82 | 0.6 - 1.6 |
   Duration of imprisonment; weeks (SD) | 28 (±39) | 52 (±95) | <0.001 |  |
   Previously imprisoned; No. (%) | 79 (84) | 276 (70) | <0.01 | 1.2 - 4.1 |
   Continuous imprisonment; No. (%) | 24 (26) | 216 (55) | <0.001 | 0.2 - 0.5 |
Ever: | Â | Â | Â | Â |
   Mean duration of IDU; years (SD) (mean, years) | 9.5 (±6.8) | 8.1 (±6.0) | 0.04 |  |
   Tattoo; No. (%) | 76 (81) | 278 (71) | 0.03 | 1.1 - 3.3 |
   Body-piercing; No. (%) | 68 (72) | 307 (78) | 0.25 | 0.4 - 1.2 |
   Fight with blood; No. (%) | 37 (39) | 167 (42) | 0.79 | 0.6 - 1.5 |
   Stabbed; No. (%) | 24 (26) | 109 (28) | 0.68 | 0.5 - 1.5 |
   Shared a razor; No. (%) | 12 (13) | 66 (17) | 0.39 | 0.4 - 1.5 |
   Haircut with laceration; No. (%) | 21 (22) | 85 (22) | 0.87 | 0.6 - 1.8 |
   Blood contact during sport; No. (%) | 12 (13) | 80 (20) | 0.11 | 0.3 - 1.1 |
   Needle-stick injury; No. (%) | 21 (22) | 68 (17) | 0.28 | 0.8 - 2.4 |
   IDU in prison; No. (%) | 49 (52) | 147 (37) | 0.01 | 1.1 - 2.8 |
   Injected by someone else; No. (%) | 58 (62) | 284 (72) | 0.04 | 0.4 - 1.0 |
   Injected heroin; No. (%) | 69 (73) | 249 (63) | 0.06 | 1.0 - 2.7 |
   Injected methamphetamine; No. (%) | 82 (87) | 341 (87) | 0.86 | 0.5 - 2.1 |
   Injected methadone/buprenorphine; No. (%) | 40 (43) | 125 (32) | 0.05 | 1.0 - 2.5 |
   Daily IDU; No. (%) | 82 (87) | 296 (75) | 0.01 | 1.2 - 4.3 |
   Shared IDU equipment; No. (%) | 63 (67) | 243 (62) | 0.43 | 0.8 - 2.0 |
   Drug & Alcohol counseling; No. (%) | 69 (73) | 303 (77) | 0.42 | 0.5 - 1.4 |
3 months prior to incarceration* | Â | Â | Â | Â |
   IDU; No. (%) | 58 (83) | 115 (65) | <0.01 | 1.3 - 5.1 |
   Daily IDU; No. (%) | 50 (71) | 75 (43) | <0.001 | 1.9 - 6.1 |
   Shared IDU equipment; No. (%) | 18 (26) | 41 (23) | 0.69 | 0.6 - 2.2 |
   Always bleach shared equipment, No. (%) | 13 (19) | 16 (9) | 0.04 | 1.0 - 5.0 |
Since incarceration: | Â | Â | Â | Â |
   IDU; No. (%) | 31 (33) | 102 (26) | 0.17 | 0.9 - 2.3 |
   Daily IDU; No. (%) | 3 (3) | 15 (5) | 0.56 | 0.2 - 2.4 |
   Shared IDU equipment; No. (%) | 27 (29) | 93 (24) | 0.30 | 0.8 - 2.2 |
   Always bleach shared equipment, No. (%) | 20 (21) | 63 (16) | 0.22 | 0.8 - 2.5 |
   Recent break from IDU >6 months; No. (%) | 33 (35) | 208 (53) | <0.01 | 0.3 - 0.7 |
   Currently on MMT; No. (%) | 36 (38) | 63 (16) | <0.001 | 2.0 - 5.3 |