Quality of life improved following in-patient substance use disorder treatment

Table 2 Linear regression analysis shows the effect of independent variables on quality of life at baseline in patients with substance use disorder (SUD), N=195 patients ^a

Variable	B (95% CI)	P ^b	R2 ^c
Age	−0.01 (0.00/0.00)	0.553
Female gender	−0.03 (−0.08/0.02)	0.268
Education (years)	−0.01 (−0.02/0.05)	0.238
Relationship status, single	0.01 (−0.04/0.06)	0.823
Main SUD diagnosis	−0.02 (−0.08/0.04)	0.532
Severity Scores
Injection use	0.11 (−0.38/0.06)	0.671
Years of using most problematic substance	0.00 (0.00/0.00)	0.942
Global Score Index: SCL-90R - GSI	−0.15 (−0.18/-0.12)	<0.001	39%
Compulsory hospitalization	0.02 (−0.03/0.07)	0.413

^aSeven patients had missing QoL scores at intake.
^bP-value obtained from bivariate linear regression. Only one independent variable had P-value <0.20 in bivariate analyses.
^cR²= squared correlation coefficient in order to obtain a measure of explained variance.

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