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Table 4 Comparison between combined cannabis and non-cannabis use cases with control group regarding WCST domains

From: Cognitive dysfunction in adolescents with substance use disorder

 

Combined cannabis use group

Non-cannabis use group

Control group

p-Value

N = 100

N = 40

 

N

Mean ± SD

N

Mean ± SD

N

Mean ± SD

 

Number of categories completed

73

2 ± 1

27

3 ± 1

40

5 ± 1

0.05*

Trials to first category

73

32 ± 3

27

33 ± 4

40

20 ± 3

0.047*

Failure to maintain set

73

2 ± 1

27

1 ± 1

40

1 ± 1

 

Total number of errors

73

61 ± 14

27

58 ± 18

40

34 ± 4

0.036*

Number of perseverative errors

73

33 ± 8

27

31 ± 10

40

18 ± 3

0.043*

Number of perseverative responses

73

44 ± 5

27

45 ± 5

40

26 ± 4

0.05*

Number of non-perseverative errors

73

28 ± 7

27

27 ± 8

40

16 ± 5

0.038*

  1. *p-value < 0.05 significance. Shows that combined cannabis use group had lower mean than non-cannabis use group, control group as regard all domains except failure to maintain set, and the difference had statistically critical (p = 0.05) which means that cannabis use might affect the executive function domains except sustained attention