The study in question doesn't have enough to it to be considered a valid study.
No, 10 deaths per year period. More people than that die in cars, but I'd hardly suggest people keep their kids from cars. It's just easy to say 'well, but pit bulls are dangerous and bred for fighting'.
And dogs in general rarely attack. Seriously, Pit Bulls are not this monster that are just going to attack you. Statistically, you're more likely to die in any other number of ways than even get attacked by one.
You are welcome to expose you kids to whatever pet you want to, no insinuations.