From: Exposure to fluoridated water and attention deficit hyperactivity disorder prevalence among children and adolescents in the United States: an ecological association
2003
2007
2011
Region
Mean %
SD
Northeast
7.92
1.13
9.46
0.97
10.96
1.72
Midwest
7.87
1.05
9.82
2.03
11.93
South
9.41
11.74
2.28
13.51
2.49
West
6.41
0.80
7.73
1.28
8.75
1.67