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Table 2 Drug related characteristics of the sample

From: Predictors of time to relapse in amphetamine-type substance users in the matrix treatment program in Iran: a Cox proportional hazard model application

  Patients included (n = 128) Patients excluded (n = 39)  
  n Mean/% n Mean/% p value
Age at first time of drug use 128 22.00 39 21.32 .68b
Duration of Addiction (in years) 128 5.20 39 5.25 .99b
Duration of amphetamines dependence (in years) 128 2.20 39 2.02 .79b
Family support      .99a
 Yes 32 25.00 % 9 23.08 %  
 No 96 75.00 % 30 76.92 %  
Having (at least) an addict in the family      .79a
 Yes 46 35.94 % 13 33.33 %  
 No 82 64.06 % 26 66.67 %  
Injection experience      .59a
 Yes 26 20.31 % 9 23.08 %  
 No 102 79.69 % 30 76.92 %  
Poly substance abuse      .63a
 Yes 110 85.94 % 32 82.05 %  
 No 18 14.06 % 7 17.95 %  
Amphetamines dependence as the primary diagnosis      .99a
 Yes 113 88.29 % 34 87.18 %  
 No 18 11.72 % 5 12.82 %  
Treatment experience      .99a
 Yes 95 74.22 % 29 74.36 %  
 No 33 25.78 % 10 25.64 %  
A history of residential treatment in camps      .76a
 Yes 78 60.94 % 22 56.41 %  
 No 50 39.06 % 17 43.59 %  
  1. Note.
  2. achi-square test; bt-test