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Table 6 Multiple linear regression analysis to detect the predictors affecting Addiction Intensity Scale (AIS) scoring

From: Does type and number of used substances affect the severity of illness in patients with substance use disorders?

  Unstandardized coefficients R R2 P value
B Std. error
Constant
Age of onset
Duration of addiction
Education
Overall number of substances
Current number of substances
13
−0.14
0.02
0.2
1.28
−0.77
2
0.07
0.08
0.08
0.29
0.4
0.580 0.337 0.040*
0.849
0.013*
< 0.001*
0.057
  1. Multiple linear regression analysis