On Apr 11, 2013, at 5:10 PM, David Meyer <dmm(_at_)1-4-5(_dot_)net>
Yes, but that is a different question. --dmm
IOW, you are suggesting that the percentages among non-attending participants
may be substantially different than the percentages among attending
participants? That's a point worth studying, but wouldn't likely be addressed
by the proposed survey, unless some way were added to include non-attending
participants.