Characteristic | Total sample (n = 200) | Willingness to use SIS | Unadjusted OR (95% CI) | Adjusted OR (95% CI) | |
---|---|---|---|---|---|
Yes (n = 137) n (%) | No or Maybe (n = 63) n (%) | ||||
Age, yr | |||||
 Median (IQR) | 35 (28–43) | 34 (27–43) | 37 (28–46) | 0.99 (0.96–1.02) | 1.02 (0.98–1.05) |
Gender | |||||
 Male | 114 (57.0) | 78 (68.4) | 36 (31.5) | 0.99 (0.54–1.81) | 0.94 (0.47–1.85) |
 Female | 86 (43.0) | 59 (68.6) | 27 (31.4) |  |  |
Ethnicity | |||||
 White | 53 (26.5) | 31 (58.5) | 22 (41.5) | 1.84 (0.95–3.53) | 1.77 (0.81–3.87) |
 Other | 147 (73.5%) | 106 (72.1) | 41 (27.9) |  |  |
Housing | |||||
 Unstable/Homeless | 133 (66.5) | 98 (73.7) | 35 (26.3) | 2.10* (1.08–3.74) | 1.54 (0.75–3.16) |
 Stable | 67 (33.5) | 39 (58.2) | 28 (41.8) |  |  |
Sex work | |||||
 Yes | 33 (16.5) | 30 (90.9) | 3 (9.1) | 5.61* (1.64–19.15) | - |
 No | 167 (83.5) | 107 (64.1) | 60 (35.9) |  |  |
Any public injectinga | |||||
 Yes | 128 (64.0) | 103 (80.5) | 25 (19.5) | 4.61* (2.44–8.70) | 4.15* (2.08–8.29) |
 No | 72 (36.0) | 34 (47.2) | 38 (52.8) |  |  |
Any injecting alonea | |||||
 Yes | 155 (78.0) | 111 (71.6) | 44 (28.4) | 1.75 (0.87–3.50) | - |
 No | 44 (22.0) | 26 (59.1) | 18 (40.9) |  |  |
Any help injectinga | |||||
 Yes | 76 (38.0) | 54 (71.1) | 22 (28.9) | 1.21 (0.65–2.25) | - |
 No | 124 (62.0) | 83 (66.9) | 41 (33.1) |  |  |
Syringe sharinga | |||||
 Yes | 23 (11.8) | 14 (60.9) | 9 (39.1) | 0.71 (0.29–1.75) | - |
 No | 172 (88.2) | 118 (68.6) | 54 (31.4) |  |  |
Daily opioidb injectinga | |||||
 Yes | 45 (22.5) | 33 (73.3) | 12 (26.7) | 1.35 (0.64–2.83) | - |
 No | 155 (77.5) | 104 (67.1) | 51 (32.7) |  |  |
Daily cocaine injectinga | |||||
 Yes | 37 (18.5) | 31 (83.8) | 6 (16.2) | 2.78* (1.09–7.05) | 1.97 (0.73–5.31) |
 No | 163 (81.5) | 106 (65.0) | 57 (35.0) |  |  |
Daily crack/rock cocaine injectinga | |||||
 Yes | 21 (10.5) | 17 (80.9) | 4 (19.0) | 2.09 (0.67–6.49) | - |
 No | 179 (89.5) | 120 (67.0) | 59 (32.9) |  |  |
Any Wellbutrin injectinga | |||||
 Yes | 67 (33.5) | 51 (76.1) | 16 (23.9) | 1.74 (0.90–3.39) |  |
 No | 133 (66.5) | 86 (64.7) | 47 (35.3) |  | - |
Any Ritalin or Biphentin injectinga | |||||
 Yes | 75 (37.5) | 56 (74.7) | 19 (25.3) | 1.60 (0.85–3.02) | - |
 No | 125 (62.5) | 81 (64.8) | 44 (35.2) |  |  |
Ever OD | |||||
 Yes | 77 (38.5) | 57 (74.0) | 20 (26.0) | 1.53 (0.82–2.88) | - |
 No | 123 (61.5) | 80 (65.0) | 43 (35.0) |  |  |
Drug treatment history | |||||
 Yes | 143 (71.5) | 99 (69.2) | 44 (30.8) | 1.13 (0.58–2.17) | - |
 No | 57 (28.5) | 38 (66.7) | 19 (33.3) |  |  |