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Table 3 Differences between completers and non-completer: univariate analyses

From: Completion rates and psychosocial intervention effectiveness in an Australian substance use therapeutic community

  Total Completers Non-Completers Test-statistic P-value
N = 193 N = 59 N = 134
n % % %
Gender 1χ(1) = 0.050 0.823
 Male 107 55.44 54.24 55.97   
 Female 86 44.56 45.76 44.03   
Age 1χ(2) = 7.309 4 0.026
  < 25 yr 16 8.29 1.69 11.19   
 26–50 yr 159 82.38 93.22 77.61   
  > 51 yr 18 9.33 5.08 11.19   
 Mean (sd) Age (years)    36.86 (6.99) 37.52 (10.09) 2T(156) = 0.52 0.603
Rurality 1χ(1) = 2.934 0.087
 MMM 1 (Metro) 120 62.18 71.19 58.21   
 MMM 2–6 (Non-Metro) 73 37.81 28.81 41.79   
Depression on Entry (DASS) 1χ(1) = 3.478 0.062
 Normal-Mild 85 45.95 55.93 41.27   
 Moderate-Very Severe 100 54.05 44.07 58.73   
 Mean (sd)    14.20 (10.80) 17.46 (11.30) 2T(183) = 1.86 0.065
Anxiety on Entry (DASS) 1χ(1) = 0.003 0.958
 Normal-Mild 81 43.78 44.07 43.65   
 Moderate-Very Severe 104 56.22 55.93 55.93   
 Mean (sd)    11.61 (8.31) 13.31 (9.06) 2T(183) = 1.22 0.224
Stress on Entry (DASS) 1χ(1) = 0.218 0.641
 Normal-Mild 102 55.14 57.63 53.97   
 Moderate-Very Severe 83 44.86 42.37 46.03   
 Mean (sd)    15.61 (8.41) 17.89 (9.38) 2T(183) = 1.59 0.114
Primary Substance3
 Alcohol 95 50.53 56.90 47.69 1χ(1) = 1.359 0.243
 Amphetamines 31 16.49 8.62 20.0 1χ(1) = 3.771 0.052
 Cannabis 18 9.57 6.90 10.77 1χ(1) = 0.695 0.405
 Heroin 27 14.36 17.24 13.08 1χ(1) = 0.566 0.452
 Other Drugs 17 9.04 10.34 8.46 1χ(1) = 0.173 0.678
Self-Reported Problems
 Non-Drug Addictions 39 20.21 20.34 20.15 1χ(1) = 0.0009 0.976
 Aggression 91 47.15 32.20 53.73 1χ(1) = 7.619 4 0.006
 Self-Harm/Suicidality 113 58.55 45.76 64.18 1χ(1) = 5.725 4 0.017
 Risk Taking Behaviours 159 82.81 84.75 81.95 1χ(1) = 0.2237 0.636
WHOQOL-8 on Entry Mean (sd) Mean (sd) Mean (sd)   
 Quality 3.07 (0.99) 3.10 (0.98) 3.05 (0.98) 2T(190) = −0.32 0.749
 Health 2.98 (1.04) 2.91 (1.04) 2.90 (1.05) 2T(190) = −0.08 0.937
 Energy 3.16 (1.05) 3.27 (1.11) 3.11 (1.01) 2T(190) = −0.97 0.333
 Money 3.01 (1.24) 3.37 (1.29) 2.88 (1.20) 2T(190) = −2.57 4 0.011
 Daily Living 3.17 (1.13) 3.15 (1.20) 3.17 (1.10) 2T(190) = 0.07 0.942
 Self-Satisfaction 2.50 (1.00) 2.52 (1.06) 2.50 (0.95) 2T(190) = −0.19 0.850
 Relationships 2.67 (1.12) 1.56 (1.15) 1.77 (1.10) 2T(190) = 1.19 0.236
 Living Place 3.07 (1.19) 3.20 (1.16) 3.03 (1.22) 2T(190) = −0.92 0.357
  1. MMM = Modified Monash Model, a measure of location and medical service access, DASS = Depression, Anxiety, Stress Scale; WHOQOL-8 = World Health Organisation Quality of Life 8 Questions
  2. 1Chisquare test; 2T-test; 3N = 188, comparison made: primary substance us other primary drug substance; 4P<0.05