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 | Â | |||||
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* |