Sample (N = 456)

ADHD Positive (n = 31)

ADHD Negative (n = 425)

Medical history

Presence

131 (28.8%)

14 (45.1%)

117 (27.5%)

Absence

325 (71.2%)

17 (54.8%)

308 (72.5%)

History of traumatic brain injury

Presence

62 (13.6%)

5 (16.1%)

57 (13.4%)

Absence

394 (86.4%)

26 (83.8%)

368 (86.6%)

Neurosurgical intervention

Yes

1 (1.5%)

1 (3.2%)

0 (0.0%)

No

61 (98.5%)

30 (96.7%)

31 (7.3%)

Psychiatric history

Yes

3 (0.7%)

0 (0.0%)

3 (0.7%)

No

453 (99.3%)

31 (100%)

422 (99.3%)

Psychoactive substances (n = 187)

Yes

187 (41%)

17 (54.8%)

170 (40.0%)

No

269 (59%)

14 (45.1%)

255 (60.0%)

Consumption period (year)

<5 years

21 (11.4%)

11 (35.4%)

10 (2.4%)

≥5 years

55 (29.6%)

6 (19.3%)

49 (11.5%)

Type of psychoactive substance

Alcohol

26 (74.28%)

1 (50.0%)

25 (75.75%)

Tobacco

7 (20.0%)

1 (50.0%)

6 (18.18%)

Tramadol

1 (2.85%)

0 (0%)

1 (3.03%)

Cannabis

1 (2.85%)

0 (0%)

1 (3.03%)

Criminal record

Yes

50 (11.0%)

25 (80%)

25 (5.9%)

No

406 (89.0%)

6 (19.3%)

400 (94.1%)