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Table 2 Comparison of mean scores of (substance abuse and Internet) knowledge in and between the intervention and control groups

From: The effect of gamification-based training on the knowledge, attitudes, and academic achievement of male adolescents in preventing substance and internet addiction

Variable

control group

Intervention group

P-Value

M ± SD

M ± SD

Knowledge of substance abuse

Pre test

4.35 ± 2.20

4.40 ± 2.20

0.663

Post test

4.82 ± 2.03

9.04 ± 1.21

0.000

1 month PT

4.35 ± 1.84

8.46 ± 1.33

0.000

P-Value

0.152

0.000

-

Internet addiction knowledge

Pre test

3.30 ± 1.94

3.25 ± 1.73

0.954

Post test

2.95 ± 1.46

7.42 ± 0.86

0.000

1 month PT

3.26 ± 1.45

6.88 ± 0.88

0.000

P-Value

0.556

0.000

-