Debraw:
I doubt that kind of information or data is recorded by any reliable source.
DAN collects this sort of information on their Dive Accident / Fatality statistics. I think that they
once might have published the results (early 1990s?), but they've not done it since.
It would be hard to really give it any credibility even if it was available because if an agency did 10 times more students than another agency then yeah they would have more accidents. It's the law of averages.
You could argue that you could try to normalize the data by cross-referencing it to the number of divers certified, but the dive Agencies jealously guard that data.
If you could get current participants to data-share, you could do a good enough job cross-referencing these various sources to gain some insight on the relative performance of the different Agencies for the first 0-3 years since a diver was first certified. Clearly, this is not the kind of information that the "not the winner" would want to have available to anyone, especially the insurance companies.
After that initial start, the analysis problem gets complicated by diving frequency rates and the drop-out rates. Plus there's the wrinkle of divers that hold Cards from multiple Agencies - - where to you catagorize them?
All in all, about the best you can hope for is an aggregate risk based on the number of actual divers ... which is another number that's not well known; see the current issue of
Undercurrent for the discussion.
Bottom line is that the numbers could be firmed up quite a bit if someone were willing to pay for the work to be done...currently, its a "don't ask/don't tell".
-hh
