The exact info originally asked for used to be available in the 70's and early 80's. University of Rhode Island had the stats. It was broken down to accidents per 100 cerified divers by agency. That negated the "well brand P certifies more so they'll have more accidents" theory. I'm quite sure the insurance agency's have the stats today as well probably DEMA. Not that in today's society will we ever be able to get the info. I think DAN started keeping this info after URI quit.