climbing assidents

Question
what percentage of climbing accidents are done by beginers, intermediate climbers and advanced climbers?
are serious accidents ussualy due to inexperience a lack of proper knowedge on how equipment is used or a failure of equipment?

Answer
Dear James:  The American Alpine Club publishes stats. on accidents every year in its Accidents in North American Mountaineering volumn.

Here is one link with some  of those stats:

http://www.bml.umn.edu/~peter/climbing/ANAM/ANAM.html

here is the club's page:

http://www.americanalpineclub.org/knowledge/publications-acc.asp

Good Luck---------for more on climbing safety please see "Ultrasafe a Guide to Safer Rock Climbing," at Amazon.com