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Jammer Six wrote: > > On 8/20/98 16:06, Gale.Arnie.Warshawsky, gwaw@ix*.ne*.co* posted: > > >Do you think DAN might be able to get a handle on > >this? > > No. Regardless of the acuracy of the reported injuries and deaths, no one > knows how many dives have been done without injury or death. > > There is no way to find this number out. > > For example, since I dive, and no one has contacted me for my dive > statistics, any claim of accuracy in an injury per dive number is false, > since it doesn't include my dives. Have you been contacted? Then is > doesn't include your dives, either. > > Therefore, it's not possible to calculate an injuries-per-dive or a > fatality-per-dive, unless the scope is limited to a controlled set. (For > instance, in WKPP, the injuries per dive are XX, or off the Belize > Aggressor, the fatalities per dive between the dates of Jan 1, 1997 and > Jan 1, 1998, were YY.) Jammer, First, thank you for your comments. I understand your point, but there are many things that are reasonably estimated without being able to make exhaustive measurements. Much of our knowledge, such as it is, of astronomical things, morbidity of people exposed to viruses, lethal doses of lots of things, automobile accidents on holidays. Do you think that some of the statistical techniques applied in the annual fish count might apply? In that process one certainly doesn't expect every fish to be counted and those that are counted to only be counted once, yet the data is processed in a way to yield useful information. My point is that it might be possible to estimate diver death rates. Some on this list assert that the absolute number of diver deaths is increasing and thus training practices by various agencies are at fault. It may simply be that there are more deaths because lots more people are diving. If that is the case, it may be that there are fewer per capita deaths and thus one might infer that perhaps equipment improvements and better training across the board is responsible. Alternatively, it may be that statistically more divers are diving than expected, which could suggest poorer equipment (I think not likely) or poorer training across the board. I suspect that some would not want to see the former conclusion because it might burst a preconceived notion of reality. I'm more interested in knowing the truth, not just the prejudice. It's a shortcoming in my personality caused by a career devoted to science and seeking underlying truthes. :-) Blow gentle bubbles, Arnie Warshawsky -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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