Socio-demographic variables at T0 Clinical variables at T0 Needs and functionality variables at T0 Negative life events at T0 Social support at  T0
Variables
at baseline (T0)
β P β P β P β P β t P 95.0% CI Colinearity statistics
LL UL Tolerance VIF
Language -.482 .000 -.482 .000 -.468 .000 -.468 .000 -.468 -8.784 .000 -7.761 -4.920 .869 1.151
Age -.169 .001 -.169 .001 -.149 .003 -.149 .003 -.149 -2.946 .003 -.153 -.030 .963 1.038
Gender .160 .002 .160 .002 .150 .003 .150 .003 .150 2.968 .003 .657 3.246 .968 1.034
Autonomous housing .166 .002 .166 .002 .150 .007 .150 .007 .150 2.696 .007 .542 3.472 .795 1.259
Severity of needs         .109 .039 .109 .039 .109 2.076 .039 .009 .321 .899 1.112
Community functionality (MCAS score)         -.101 .049 -.101 .049 -.101 -1.973 .049 -.136 .000 .951 1.052
Total variance explained (R2) 26.2% 26.2% 28.4% 28.4% 28.4%
Goodness-of-fit                              
F 25.888 25.888 19.170 19.170 19.170
P <0.001 <0.001 <0.001 <0.001 <0.001
Table 2: Variables associated with drug-alcohol abuse among users with mental disorders: hierarchical linear regression analysis.