Definitions are important for statistical analysis. If a glider crashes
after flying a circuit from an 800ft cable break, is it a winching
accident or an approach and landing accident? If it spins after
successfully completing a winch launch, is that a winching accident
or a stall/spin accident? I would think that a serious injury would be
broken bones, head injury, deep lacerations and anything that
requires hospital treatment. So a bruised backside or a grazed
finger shouldn't really count.

Derek Copeland

At 16:22 14 October 2013, Chris Nicholas wrote:
John, Paul’s figures are for fatals and “serious” injuries, not all

injuries, AIUI. I would not be surprised if the definition of
“serious��

differs.

Chris N