Table 3 Current and previous treatment for ADHD and SUD

Previously received ADHD treatment

 Yes

56.9%

 No

40.8%

 Unknown

2.3%

Received pharmacological ADHD treatment before 18 years old

 Yes

21.3%

 No

51.0%

 Unknown

27.6%

Currently receives ADHD treatment (at inclusion)

 Pharmacological

34.9%

 Psychological

20.9%

 No

60.7%

 Unknown

1.7%

Previously received SUD treatment

 Yes

71.1%

 No

24.0%

 Unknown

4.9%