Quote: (Originally Posted by
O.C.Diver)
This statistical BS is all rather pointless. The only real way to make any meaningful comparison of deaths relative to specific models is to compare number of deaths per 10,000 dives on each model. When the sample number gets large enough percentages can more realistically be determined. Unfortunately, nobody has any idea what the number of deaths per 10,000 dives is for any of these units.
Ted
Interesting. The point of all "this statistical BS" is to do exactly what you are suggesting would happen with your 10,000 dive plan - remove the margin of error and provide real apples-to-apples comparisons.
Further to that point, how can you be sure that all rebreathers get the same 10,000 dives in your plan? A Dolphin may get them all above 100' with no deco obligation and an average dive duration of 40 minutes. A trimix-capable eCCr may get the majority of those dives below 250' with substantial deco obligations and an average dive duration of over 90 minutes. Are these the same dives? Do they carry the same risk?
Without considering these variables through 'statistical BS' you will never get a projectible accident rate.