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Table 3 Factors associated with methadone non-compliance (either dropped out or missed < 5 days) during 27–36 months of treatment in Haiphong (2014); N = 242

From: A longitudinal and case-control study of dropout among drug users in methadone maintenance treatment in Haiphong, Vietnam

Variable

Crude OR

(95% CI)

p

Adjusted OR

(95% CI)

p

Age, years

 24–40

Ref

     

 41–59

0.89

(0.50–0.56)

0.677

   

Gender

 Female

Ref.

     

 Male

0.75

(0.12–0.58)

0.755

   

Educational level completed

 Secondary school and lower

Ref.

     

 High school and higher

0.91

(0.53–0.55)

0.718

   

Marital status

 Married

Ref.

  

Ref

  

 Single/widowed/divorced/separated

0.49

(0.28–0.86)

0.013

0.67

(0.24–1.86)

0.440

Have children

 No

Ref.

  

Ref

  

 Yes

2.50

(1.36–0.59)

0.003

2.84

(0.88–9.14)

0.081

Distance from house to the MMT clinic, mean (SD), km

1.06

(0.99–0.13)

0.054

1.07

(0.96–1.20)

0.228

Most recent methadone dose (mg/day)

 5–59

Ref.

  

Ref

  

 60–119

0.40

(0.22–0.76)

0.005

0.40

(0.17–0.94)

0.036

 120–380

0.36

(0.10–0.46)

< 0.001

0.28

(0.09–0.86)

0.026

Number of doses of methadone missed, last 3 months

 No missed doses

Ref.

  

Ref

  

 1–3 doses

3.61

(1.66–7.87)

0.001

2.21

(0.86–5.66)

0.098

 > 3 doses

24.4

(10.83–4.98)

< 0.001

18.48

(7.25–47.09)

< 0.001

Used heroin during last month of MMT

 No

Ref.

  

Ref

  

 Yes

8.92

(3.96–20.13)

< 0.001

12.40

(4.19–36.75)

< 0.001

Have current friends who use drugs

 No

Ref.

  

Ref

  

 Yes

0.68

(0.39–1.16)

0.154

0.62

(0.29–1.31)

0.207

HIV status

 Negative

Ref.

  

Ref

  

 Positive

0.33

(0.17–0.65)

0.001

1.06

(0.39–2.93)

0.907

Self-reported mental health problems, last 3 months

 No

Ref.

  

Ref

  

 Yes

1.90

(1.10–3.29)

0.021

0.99

(0.45–2.17)

0.983