Occurrence of each attribute reported by the two observers for the 109 actions that resulted in an impact behind the saddle.

These data were drawn from videos taken from the outside of the track in 15 races over two meetings at the same clockwise racetrack. Unless otherwise stated, these data represent information on 21 jockeys and 31 horses.aObserver A was unable to make a definitive decision on 99 occasions and Observer B on 30 occasions.bData on 7 jockeys riding 7 different horses.