From: Participation dynamics of a cohort of drug users in a low-threshold methadone treatment programme
Low consistency (n = 126) | High/moderate consistency (n = 59) | Test | |||||
---|---|---|---|---|---|---|---|
No. | % | No. | % | OR | 95 % CI | p value | |
Median | IQR | Median | IQR | Mann-Whitney U | |||
(a) Baseline socio-demographics | |||||||
Male | 95 | 75 % | 46 | 78 % | 1.16 | 0.55–2.41 | 0.70 |
Chinese | 94 | 75 % | 50 | 85 % | 1.89 | 0.84–4.27 | 0.12 |
HKID holdera | 107 | 85 % | 55 | 93 % | 2.44 | 0.79–7.53 | 0.11 |
Age (years) | 33 | 28–39 | 38 | 31–43 | 2629 | 0.001* | |
Aged >35 | 46 | 37 % | 38 | 64 % | 3.15 | 1.65–6.00 | <0.001* |
Years of narcotic use | 6 | 2–13 | 9 | 3–17 | 2866 | 0.01* | |
(b) Methadone clinic attendance pattern | |||||||
No. of attendances | 655 | 295–1081 | 1509 | 1165–1764 | 1037 | <0.001* | |
Frequency >2/week | |||||||
<50 % | 13 | 10 % | 2 | 3 % | 0.31 | 0.07–1.40 | 0.11 |
50–89 % | 68 | 54 % | 19 | 32 % | 0.41 | 0.21–0.78 | 0.01* |
≥90 % | 45 | 36 % | 38 | 64 % | 3.26 | 1.71–6.21 | <0.001* |
Visiting time | |||||||
Morning | 18 | 14 % | 22 | 37 % | 3.60 | 1.73–7.38 | <0.001* |
Afternoon | 28 | 22 % | 18 | 31 % | 1.54 | 0.77–3.08 | 0.22 |
Evening | 99 | 79 % | 32 | 54 % | 0.32 | 0.17–0.63 | 0.001* |
No. of clinics visited | 3 | 2–4 | 2 | 2–4 | 3065 | 0.05 | |
No. of breaks | 3 | 2–5 | 0 | 0–1 | 0.59 | <0.001* | |
Longest break (months) | 15 | 8–25 | 1 | 0–2 | / | / | |
(c) Dosage of methadone | |||||||
Highest dose ≥80 mg | 47 | 37 % | 19 | 32 % | 0.80 | 0.42–1.54 | 0.50 |
Lowest dose <20 mg | 66 | 52 % | 37 | 63 % | 1.53 | 0.81–2.88 | 0.19 |
Dose range (mg) | 51 | 40–61 | 50 | 35–60 | 3332 | 0.25 | |
Mode dose (mg) | 40 | 30–60 | 40 | 35–50 | 3603 | 0.73 | |
Mean dose (mg) | 43 | 36–55 | 40 | 34–50 | 3402 | 0.35 | |
Median dose (mg) | 40 | 35–55 | 40 | 35–50 | 3441 | 0.41 | |
Highest dose (mg) | 70 | 55–80 | 65 | 50–80 | 3277 | 0.19 | |
Lowest dose (mg) | 15 | 10–25 | 15 | 10–20 | 3439 | 0.41 | |
Proportion of days with dose <20 mg | 0 % | 0–6 % | 1 % | 0–7 % | 3269 | 0.17 | |
Proportion of days with dose >40 mg | 48 % | 17–74 % | 38 % | 8-73 % | 3447 | 0.43 | |
(d) Connectivity patterns | |||||||
Attended the nearest clinicb | 37 | 77 % | 15 | 63 % | 0.50 | 0.17–1.44 | 0.19 |
Same residing and clinic districtb | 31 | 65 % | 13 | 54 % | 0.65 | 0.24–1.76 | 0.39 |
Distance (m) from home to frequent clinicb | 454 | 188–971 | 584 | 297–2876 | 492 | 0.31 | |
Shortest distance (m) from home to clinicb | 421 | 182–726 | 481 | 277–778 | 509 | 0.42 | |
Connected in social networkc | 70 | 56 % | 40 | 68 % | 1.68 | 0.88–3.22 | 0.11 |
Degreed | 1 | 0–4 | 2 | 0–39 | 2888 | 0.01* | |
Betweenness centralitye | 1 | 0–7120 | 492 | 0–19906 | 1113 | 0.06 |