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Table 5 Factors affecting drop out from drug treatment, multivariate analysis (N = 13464)

From: Factors predicting drop out from, and retention in, specialist drug treatment services: A case control study in the North West of England

Explanatory variables

Adjusted odds ratio (95% confidence interval)

Ethnicity

 

White

Reference

Mixed

1.14 (0.73 – 1.79)

Asian/Asian British

1.52** (1.12 – 2.08)

Black/Black British

1.10 (0.67 – 1.79)

Other

0.69 (0.32 – 1.51)

Alcohol user

 

No

Reference

Yes

0.73** (0.59 – 0.91)

Area of residence (public health zone)

 

Cheshire and Merseyside

Reference

Cumbria and Lancashire

1.80*** (1.51 – 2.15)

Greater Manchester

2.00*** (1.74 – 2.29)

Deprivation

 

1 (most)

Reference

2

1.41 (0.85 – 2.34)

3

1.05 (0.65 – 1.70)

4

1.06 (0.67 – 1.70)

5 (least)

2.92*** (1.74 – 4.90)

Age group (years) 1

0.88 (0.76 – 1.01)

Effect of interaction between age group and deprivation

 

1 (most)

Reference

2

0.92 (0.75 – 1.14)

3

1.01 (0.83 – 1.24)

4

0.95 (0.78 – 1.15)

5 (least)

0.66*** (0.52 – 0.83)

  1. Other variables entered into the model: opiate use, recent treatment contact.
  2. 1 The effect of age group showed a linear trend; the adjusted odds ratio represents the common odds ratio across strata.
  3. ** P ≤ 0.01, *** P ≤ 0.001
  4. Goodness of fit: Pearson's χ2 = 322.16, P = 0.009
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BMC Public Health

ISSN: 1471-2458

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