Maybe it's just me, but it sounds odd, as if something has been left out.It seems fine to me without the while. If I say "You're more likely to get hurt in a car accident than skydiving" or "You're more likely to get hurt driving than skydiving" do you still think it needs while?
What is the meaning of good odds in the follwoing sentence?
"That's pretty good odd," she says. " you have more change of getting hurt in a traffic accident than you do skydiving."