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111Date of death sources?

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  • chris.fletcher66
    Feb 2, 2009
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      Hi - This is a great resource, thanks for putting it together! I am starting a bit of research on
      how long hockey players live, change in lifespan over time, and comparisons to the national
      (canada) average.

      A couple of questions about the database:

      Where do date of death records come from? I am curious about how much confidence we can
      put in these dates.

      Some DoD fields are marked "9999" and others are blank including people born in the 1890s
      and presumably gone now. Is there a distinction here?


      Chris Fletcher
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