Table 1 Dropout among patients in methadone treatment during 3 years of following-up in Haiphong, Vietnam (2012–2014)
|  | 0–12 months (N = 1055) | 13–24 months (N = 944) | 25–36 months (N = 819) | Total dropped out over 3 years | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dropped out N = 111; n (%) | Missed > 5 doses N = 32; n (%) | Dropped out N = 124; n (%) | Missed > 5 doses N = 32; n (%) | Dropped out N = 115; n (%) | Missed > 5 doses N = 68; n (%) | |||||||||
All | 111 | (10.5) | 32 | (3.0) | 124 | (13.1) | 32 | (3.4) | 115 | (14.0) | 68 | (8.3) | 350 | (33.2) |
Reasons for dropouta | ||||||||||||||
 Death | 21 | (18.9) | 0 | (0.0) | 9 | (7.3) | 0 | (0.0) | 7 | (6.1) | 0 | (0.0) | 37 | (10.6) |
 Arrest | 26 | (23.4) | 0 | (0.0) | 38 | (30.6) | 0 | (0.0) | 20 | (17.4) | 3 | (4.4) | 84 | (24.0) |
 Transfer to another clinic | 11 | (9.9) | 0 | (0.0) | 7 | (5.6) | 0 | (0.0) | 7 | (6.1) | 0 | (0.0) | 25 | (7.1) |
 Otherb | 12 | (10.8) | 5 | (15.6) | 11 | (8.9) | 7 | (21.9) | 43 | (37.4) | 50 | (73.5) | 66 | (18.9) |
 Not listed | 41 | (36.9) | 27 | (84.4) | 59 | (47.6) | 25 | (78.1) | 38 | (33.0) | 15 | (22.1) | 138 | (39.4) |