Table 2 Comparison of those who missed greater than five consecutive doses, who dropped out completely, and who were retained on methadone between 27 and 36Â months of treatment in Haiphong (2014)
Variable | Cases | Controls | ||||
|---|---|---|---|---|---|---|
Dropped out N = 28; n (%) | Missed > 5 doses N = 53; n (%) | In treatment N = 161; n (%) | ||||
Demographic characteristics | ||||||
 Age, years | ||||||
  24–30 | 5 | (17.9) | 6 | (11.3) | 20 | (12.4) |
  31–40 | 17 | (60.7) | 27 | (50.9) | 85 | (52.8) |
  41–50 | 6 | (21.4) | 14 | (26.4) | 43 | (26.7) |
  51–59 | 0 | (0.0) | 6 | (11.3) | 13 | (8.1) |
  Mean, years (SD) | 36.7 | (5.5) | 39.6 | (7.4) | 38.4 | (7) |
 Male | 27 | (96.4) | 52 | (98.1) | 158 | (98.1) |
 Educational level completed | ||||||
  Primary school | 2 | (7.1) | 3 | (5.7) | 15 | (9.4) |
  Secondary school | 18 | (64.3) | 20 | (37.7) | 66 | (41.3) |
  High school | 6 | (21.4) | 28 | (52.8) | 73 | (45.6) |
  College/university or higher | 2 | (7.1) | 2 | (3.8) | 6 | (3.8) |
 Marital status | ||||||
  Single | 7 | (25) | 10 | (18.9) | 56 | (34.8) |
  Married | 17 | (60.7) | 37 | (69.8) | 80 | (49.7) |
  Separated/divorced/widowed | 4 | (14.3) | 6 | (11.3) | 25 | (15.5) |
 Live with family | 25 | (89.3) | 51 | (96.2) | 153 | (95) |
 Have children | 6 | (21.4) | 12 | (22.6) | 67 | (41.6) |
 Unemployed | 12 | (42.9) | 23 | (43.4) | 62 | (38.5) |
Methadone treatment | ||||||
 Distance from house to the MMT clinic, mean (SD), km | 3.9 | (1.9) | 5.6 | (7.4) | 3.9 | (3.1) |
 Most recent methadone maintenance dose, mg/day | ||||||
  5–59 | 9 | (33.3) | 34 | (64.2) | 43 | (26.7) |
  60–119 | 11 | (40.7) | 14 | (26.4) | 62 | (38.5) |
  120–380 | 7 | (25.9) | 5 | (9.4) | 56 | (34.8) |
  Mean(SD) | 79.4 | (44) | 57.1 | (43.5) | 111.7 | (78.8) |
Drug and alcohol usea | ||||||
 Used heroin in the last month of MMT | 11 | (39.3) | 17 | (32.1) | 9 | (5.6) |
 Used other drugs in the last month of MMT | 0 | (00) | 3 | (5.7) | 13 | (8.1) |
 Drank alcohol during the last 3 months of MMT | 21 | (75) | 34 | (64.2) | 101 | (62.7) |
Medical history | Â | (17.9) | Â | Â | Â | (36.6) |
 HIV sero-positive | 5 |  | 8 | (15.1) | 59 |  |
 HbsAg positive | 4 | (14.3) | 5 | (9.4) | 14 | (8.7) |
 HCV positive | 8 | (28.6) | 25 | (47.2) | 73 | (45.3) |
 Self-reported mental health problems in the last 3 monthsb | 13 | (46.4) | 38 | (71.7) | 76 | (47.2) |
 Have current friends who use drugs | 13 | (46.4) | 28 | (52.8) | 97 | (60.2) |