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Table 3 Comparison of the mean aggression level before and after the intervention between the experiment and control groups

From: Anger management in substance abuse based on cognitive behavioral therapy: an interventional study

p-value Control group Experiment group  
Standard deviation Mean Standard deviation Mean
0.188 12 59.17 10.58 54.11 Before intervention
0.001 11 63.72 10.00 47.72 After intervention
0.013 0.015 P-value