| Buprenorphine (total 28) | Dihydrocodeine (total 32) | Odds Ratio (95% CI) | Relative Risk (95% CI) | P value |
---|---|---|---|---|---|
By end of detox | |||||
   Final urine sample | 9 (32%) | 4 (13%) | 3.32 (0.77–15.22) | 1.71 (1.04–2.83) | 0.065 |
   Non-ITT Clean urine | 6/9 (67%) | 1/4 (25%) | 6.00 (0.28–246) | 1.71 (0.73–4.03) | 0.164 |
   ITT-1* clean urine | 6/28 (21%) | 1/32 (3%) | 8.45 (0.89–200) | 2.06 (1.33–3.21) | 0.028 |
   ITT-2* clean urine | 6+3/28 | 1+8/32 | 1.21 (0.35–4.21) | 1.11 (0.63–1.95) | 0.735 |
   Leaving early | 19 (68%) | 28 (88%) | 0.30 (0.07–1.30) | 0.58 (0.35–0.96) | 0.065 |
   Overdose | 0 | 0 | Not applicable | ||
   Inappropriate use of allocated drug | 0 | 0 | Not applicable | ||
   A&E attendance | 0 | 0 | Not applicable | ||
   Admitted | 0 | 0 | Not applicable | ||
   Overdose | 0 | 0 | Not applicable | ||
   GP visits – mean | 2.2 (1.05) | 2.8 (1.33) |  |  | 0.06 |
   Drug worker visits – mean | 0.17 (0.47) | 1.31 (0.59) |  |  | 0.343 |
At 3 months post detoxification | |||||
   Abstinent | 10/27 (37%) | 4/24 (17%) | 2.94 (0.67–13.78) | 1.55 (0.96–2.52) | 0.104 |
   Dead | 0/27 | 0/28 | Not applicable | ||
   On Med 3 sick note | 10/16 (63%) | 6/14 (43%) | 2.22 (0.41–12.65) | 1.46 (0.71–2.98) | 0.282 |
   A&E attendance | 2/27 (7%) | 2/28 (7%) | 1.04 (0.09–11.46) | 1.06 (0.38–2.94) | 0.970 |
   Hospital attendance | 1/27 (4%) | 2/28 (7%) | 0.5 (0.02–7.75) | 0.67 (0.13–3.38) | 0.574 |
   GP visits – mean | 5.04 (4.85) | 4.61 (4.10) |  |  | 0.724 |
   Drug worker visits – mean | 1.22 (1.67) | 1.14 (1.53) |  |  | 0.855 |
At 6 months post detoxification | |||||
   Abstinent | 7/22 (32%) | 3/19 (16%) | 2.49 (0.45–15.15) | 1.45 (0.84–2.49) | 0.233 |
   Dead | 0/23 | 0/20 | Not applicable | ||
   On Med 3 sick note | 3/11 (27%) | 2/11 (18%) | 1.69 (0.16–20.05) | 1.27 (0.53–3.06) | 0.611 |
   A&E attendance | 0/22 | 0/20 | Not applicable | ||
   Hospital attendance | 0/22 | 2/20 (10%) | 0.16 (0.01–3.64) |  | 0.129 |
   GP visits – mean | 7.54 (6.71) | 6.48 (6.07) |  |  | 0.582 |
   Drug worker visits – mean | 1.74 (2.40) | 2.65 (2.89) |  |  | 0.265 |