is not a reason, but sure it is a helping factor from my point of view.
Yes you are right the one who raps does not care what the woman dress and I agree with that, and your advices are valid.
Here are some statistics and some organization which are fighting the rapist
http://www.rainn.org/statistics?gclid=CIyJs4fYzagCFQd66wod9ytogw

http://en.wikipedia.org/wiki/Rape_statistics

http://oak.cats.ohiou.edu/~ad361896/anne/cease/rapestatisticspage.html

http://www.nationmaster.com/graph/cri_rap-crime-rapes