http://goo.gl/vg3rI5
Because most young children who suffer a concussion aren't first seen in hospital emergency rooms, official tallies of these injuries may be greatly underreported, a new study finds.
"Four in five of this diverse group of children were diagnosed at a primary care practice -- not the emergency department," said study author Kristy Arbogast.
Also, "one-third were under age 12," she said, "and therefore represent an important part of the concussion population that is missed by existing surveillance systems that focus on high school athletes."