FAS in this community likely ranges from 6 to 9 per 1000 children ( midpoint , 7.5 ) , PFAS from 11 to 17 per 1000 children ( midpoint , 14 ) , and the total rate of FASD is estimated at 24 to 48 per 1000 children , or 2.4 % to 4.8 % ( midpoint , 3.6 % ) .