Here's a good thread: http://www.reddit.com/r/AskReddit/comments/3249ff/women_of_reddit_when_did_you_first_notice_that/ What's interesting to me is not so much how this speaks to the prevalence of rape, but the consistency of story in terms of how women are victimized.
One of the most reliable studies on the subject found 6 cases of sexual assault per 1000 students i.e. 0.6% vs Koss’s 25 % so it’s about 42 fold by my count.
~75% of those women answered no to "it was definitely rape" themselves and it's to be construed as "they were not comfortable saying that they were definitely raped". In an anonymous study? Are you serious? Is that why hald of them went on to date their attackers again? Yeah, by equating pulling away from a kiss with being gang raped. Yeah, you could say the study was "imperfect".