Injuries are common. According to Jim Barber, spokesman for the National Association of Amusement Ride Safety Officials, "It happens all the time. These are probably the most dangerous amusement devices they have. You see more injuries on inflatables than almost any other amusement ride you can think of – more than roller coasters." According to a study published in the journal "Pediatrics" in 2012, injuries caused by inflatable rides have been on the rise in the United States, with an increasing trend since at least 2005. In 2010, "as many as 31 U.S. children per day were treated for injuries sustained in a bounce house, or one child every 46 minutes". An estimated 65,000 children under the age of 17 were injured from 1990 to 2010. In a survey spanning 2003-2013, the most common injuries were fractures, strains, sprains, dislocations, contusions, abrasions, and lacerations. An estimated 88% of the injured were less than 15 years old.