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Table 3 Odds ratios (OR) and 95% confidence intervals (CI) of binary logistic regression analyses with cocaine use as dependent variable

From: Association between methadone dose and concomitant cocaine use in methadone maintenance treatment: a register-based study

   Cocaine use (n = 574, χ2 = 2.53, p = 0.96a)  
Variable   OR 95% CI pb
    Lower Upper  
Concomitant heroin usec   4.890 3.245 7.369 <0.0001
Methadone dosed Medium dose (60–100 mg/d) 2.301 1.430 3.701 0.00059
  High dose (>100 mg/d) 2.085 1.190 3.656 0.011
Specialized centerse   1.881 1.185 2.986 0.0074
Days with take-home   .822 .754 .897 <0.0001
Employedf   .616 .364 1.043 0.071
  1. Significance level set at p < 0.05.
  2. aHosmer-Lemeshow test.
  3. bP-value from Wald test with 1 degree of freedom.
  4. cNo heroin use as reference category.
  5. dLow-dose (<60 mg/d) as reference category.
  6. eOffice-based setting as reference category.
  7. fUnemployed/pension as reference category.