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. 2017 Aug 30;14:59. doi: 10.1186/s12954-017-0185-7

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 36 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 (17.9) (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)

aPrior to dropping out

bSymptoms of anxiety, depression, and suicidal ideation or attempt