From: Do inattention and hyperactivity symptoms equal scholastic impairment? evidence from three European cohorts
Boys
Girls
Inattention
Fidgetiness
Restlessness
Sweden
18.3
12.5
1.0
4.2
1.9
Age 7–8, 2001–2
Denmark
21.5
9.3
13.1
7.4
1.6
2.8
Age 10–12 2001
Finland
6.2
7.8
10.7
1.5
1.7
2.6
Age 7–8 1993–4