From: Impact of a methadone maintenance therapy pilot in Vietnam and its role in a scaled-up response
Follow-up periods | p value | ||||||
---|---|---|---|---|---|---|---|
0–3 months | 4–6 months | 7–9 months | 10–12 months | 13–18 months | 19–24 months | ||
(n = 930) | (n = 900) | (n = 871) | (n = 852) | (n = 802) | (n = 751) | ||
Mean methadone doses at study visits, in ml (SE) | |||||||
Hai Phong | 9.6 (0.2) | 9.9 (0.2) | 9.5 (0.2) | 9.5 (0.3) | 9.4 (0.3) | 9.6 (0.3) | 0.248a |
HCMC | 10.6 (0.2) | 11.0 (0.3) | 11.2 (0.3) | 11.4 (0.3) | 11.5 (0.4) | 11.6 (0.4) | 0.000a |
Total | 10.1 (0.1) | 10.4 (0.2) | 10.4 (0.2) | 10.4 (0.2) | 10.4 (0.2) | 10.6 (0.3) | 0.000a |
Missed methadone dose for 1–2 days, in % | |||||||
Hai Phong | 19.5 | 23.6 | 30.7 | 41.1 | 48.4 | 47.7 | 0.000a |
HCMC | 17.3 | 22.0 | 26.5 | 28.1 | 33.8 | 34.7 | 0.000a |
Total | 18.4 | 22.8 | 28.6 | 34.6 | 41.3 | 41.4 | 0.000a |
Missed methadone doses for continuous 3–4 days, in % | |||||||
Hai Phong | 1.3 | 0.9 | 1.8 | 1.9 | 2.2 | 3.4 | 0.009a |
HCMC | 0.6 | 0.9 | 1.4 | 0.7 | 1.0 | 4.1 | 0.000a |
Total | 1.0 | 0.9 | 1.6 | 1.2 | 1.6 | 3.7 | 0.000a |
Missed methadone doses for a continuous 5 days or more, in % | |||||||
Hai Phong | 0.9 | 1.1 | 1.1 | 1.2 | 2.2 | 2.3 | 0.025a |
HCMC | 1.3 | 0.9 | 1.4 | 0.9 | 3.3 | 4.1 | 0.000a |
Total | 1.1 | 1.0 | 1.3 | 1.1 | 2.7 | 3.2 | 0.000a |
ARV treatment, in % | |||||||
Hai Phong | 14.2 | 12.9 | 15.1 | 14.0 | 16.3 | 16.0 | 0.202a |
HCMC | 39.8 | 50.8 | 35.9 | 38.7 | 41.2 | 43.3 | 0.846a |
Total | 27.2 | 31.9 | 25.5 | 26.3 | 28.4 | 29.2 | 0.827a |