There is data out there. Perhaps the most cited, but also the most flawed data you'll find comes from a PETA symp named Clifton Merritt. His study has been soundly debunked, but continues to be referenced by pit bull haters. I'm pinging solosmoke, who has personally done a lot of research on the matter, and probably has a lot of the data at his fingertips.
Pitbull attacks boy in BloomingtonBy Ray Cortopassi
Fox59
2:56 p.m. EDT, August 9, 2010Bloomington, Ind. The Monroe County Sheriff's Department is investigating a pitbull attack that left a 7-year-old boy with dozen of stitches to his face and several broken teeth.
The attack happened in a backyard at the home on Woodbine Drive southwest of Bloomington Thursday afternoon.