Bob DBF
Contributor
Poor gas management is the main culprit!
Having been trained without the use of an SPG, and numerous dives without a j-valve, I probably ran out of air more than most divers here combined, yet here I am. If one is trained well to deal with the casualty, it does not become an emergency, or a possible fatality.
As I said before, it takes time to make a competent diver. Without taking the time to train a diver to easily deal with an OOA, panic may be their first option. From my experience OOA doesn't kill people, panic does. YMMV.