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    PFD Stats was Re: On teaching seamanship
    From: Dave Weilacher
    Date: 2004 Oct 14, 16:46 -0500

    This is meant as a 'just for thought' observation.
    "In 70% of all drownings the victim was not wearing a PFD."
    I have often wondered what percent of people who fall in the water 
    unintentionally (read without PFD) actually drown.  Seems to me like that is 
    the meaningful statistic to know.  Or - what percent of the 70% would have 
    lived had they been wearing a PFD?  Can you extrapolate from your stats that 
    3 out of every 10 of that 70% would die anyway?
    There is much about the use of statistics that I distrust.  Here is my 
    favorite:  80% of all statistics are made up on the spot to support whatever 
    argument is being made.
    -----Original Message-----
    From: Bill 
    Sent: Oct 14, 2004 4:30 PM
    Subject: Re: On teaching seamanship
    > I find the serious sailers(blowboat operators of all sizes)to be much more
    > competant in seamanship then are motor(stinkpot)vessel operators.At least
    > out here on the west coast of the states.
    From government figures, 2001 or 2002?, there were almost 700 U.S. boating
    fatalities that year, and they were on the rise.
    Only 4% were sailing related (auxiliary and non auxiliary).
    Referencing the 700 figure, in 70% of all drownings the victim was not
    wearing A PFD.
    Of course that begs the question, what is the ratio of sailboat use to
    powerboat use? If anyone has that figure (or ownership--My SWAG would be
    20-25% sailboats) would love to have it so I can put the 4% figure in
    perspective for my classes.
    Dave Weilacher
    .IBM AS400 RPG contract programmer

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