<100
101-200
201-400
401-800
801-1600
>1600
Hehe.... I was going to say that, but well...Originally Posted by NorthWoodsDiver
Every dive is a decompression dive... so I imagine your only asking about dives requiring mandatory in water decompression stops. Just thought I would clarify in case anybody was wondering.
Neither of the polls address when in the divers career they had a diving injury. Thats key information IMO.
I would think its more likely for someone to have an injury in their early days of decompression diving and after many years of decompression diving. but this is all based on my though process and no evidence.
-People who are newer to the idea may not have the skills or knowledge on the subject necessary to safely complete the dives thus leading to issues. as they do it more and more and continue training they will become better divers and more knowledgeable on the issues and will use caution and common sense to help avoid injury.
-People who have several hundred or thousand decompression dives have been doing it a while and usually find a system that they are comfortable with but I have seen several seasoned divers starting to switch things up and play with gradient factors and tables to try and push things a little. So I would bet some of these guys who decide to start modifying things or those who become complacent are the ones ending up with injury even though they have been diving a long time.
Its all theory but it makes sense to me. am I wrong?
If you are going to correlate this to getting bent, should you not also differentiate the type of deco dive?
Depth, time, deco time, temp, types of gas etc?
Meng Tze
-Homo Bonae Voluntatis
Add 2 more for me.
94 minutes at Ginnie
86 minutes at Ginnie
Hey I remember that from my NAUI Instructor manual also.Hehe.... I was going to say that, but well...
I could equally claim that people who HAVEN'T been bent will tend to answer.
Do you have evidence for your claim? Because I sure don't for mine. Perhaps we should split the difference...
Anyway I just want to make the simple observation that assuming no biases in which of CDF's readers ansered iether or both polls (and it's a pretty high percentage of active readers anyway), CDF readers have a surprisingly high rate of getting the bends. About 40% have had some sort of incident, about 15% have taken rides (i.e. 25% (including myself) have had minor hits that they've treated themselves). Yet the average number of deco dives is way nearer 200 than 1000, leading to a hit rate of at LEAST 1 in about 500 dives - and I'm not even including victims of multiple hits (I've had two). I have NO causal variables, and I don't have the joint distribution - and franklly I'm not in a huge rush to collect those data. There MIGHT be bias in who chose to answer, but again considering the high percentage of respondents (especially to the first poll, which is probably the one most likely to induce bias), I doubt it.
But y'all take care out there - we're getting bent at a pretty high rate.
Last edited by aainslie; 03-16-2009 at 10:13 AM.
Andrew Ainslie
Almost extinct cave diver
And yet everyone seems to opt for schedules to 'rush out of the water'.....
Netmage, that's probably the most profound post made on the Forum in the last year.
Whoever said money can't buy love never bought a puppy.
Well said
Yep... I've done at least three big things on this:
1) I take an ipod touch into the water. On deco I catch up on TV. I'm much more willing to do an extra 15 minutes at the end of deco when watching TV.
2) I use GF 15/80 and VPM B/E conservative 5.
3) I do a few minutes substantially shallower than my computer suggests. At Ginnie, if my first stop is at 30, I spend about 5 mintues at 50 first.
Step up the conservative levels on those deco's!
Andrew Ainslie
Almost extinct cave diver
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