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Table 2 Ordered logistic regression on adherence for 90, 180, and 365 days of MMTa

From: Adherence among HIV-positive injection drug users undergoing methadone treatment in Taiwan

  90 days b 180 days c 365 days d
Characteristics OR 95% CI OR 95% CI OR 95% CI
Age 1.02** 1.01 1.04 1.02** 1.01 1.04 1.02** 1.01 1.04
Gender
 Female (RC) 1.00    1.00    1.00   
 Male 1.41 0.97 2.06 1.20 0.82 1.74 1.11 0.75 1.64
Education level
  < 9 years (RC) 1.00    1.00    1.00   
  > =9 years 1.51** 1.15 1.97 1.65*** 1.26 2.16 1.44* 1.09 1.92
Marital status
 Married (RC) 1.00    1.00    1.00   
 Married but separated 0.73 0.40 1.31 0.48* 0.26 0.89 0.38** 0.20 0.74
 Single 0.93 0.62 1.40 0.77 0.51 1.17 0.55** 0.36 0.84
 Divorced 1.27 0.84 1.93 1.10 0.71 1.68 0.76 0.49 1.18
Employment status
 Not employed (RC) 1.00    1.00    1.00   
 Employed 1.36* 1.06 1.75 1.24 0.96 1.60 1.28 0.98 1.68
Case management area
 Taipei metro area (RC) 1.00    1.00    1.00   
 Kaohsiung metro area 0.76 0.56 1.02 0.61** 0.45 0.83 0.55*** 0.40 0.75
 Taiwan County 0.59** 0.44 0.80 0.56*** 0.41 0.77 0.57** 0.41 0.79
MMT mean dosage
  < 60 mg (RC) 1.00    1.00    1.00   
  > =60 mg 2.58*** 1.89 3.52 2.18*** 1.62 2.95 1.80*** 1.33 2.43
HIV+ diagnosed & in MMT date
 HIV+ before MMT > = 180 days (RC) 1.00    1.00    1.00   
 HIV+ before MMT < 180 days 0.82 0.59 1.14 0.70* 0.50 0.98 0.55** 0.38 0.79
 HIV+ after MMT 0.65** 0.50 0.86 0.61** 0.46 0.81 0.58*** 0.43 0.78
  1. Notes: OR odds ratio, CI confidence interval, RC reference category
  2. aAdherence of 90 days, 180 days, and 365 days for MMT ordered by > = 90%, 50–90, < 50%
  3. b,c,d Brant Tests of Parallel Regression Assumption were non-significant (p > .05) and approximate likelihood-ratio test of odds across response categories were non-significant (p > .05)
  4. *p < 0.05; **p < 0.01; ***p < 0.001