I'm going to bow out now because it's very clear from this, and the other threads on the topic, that some people appear to be flinging statistics around ("more likely to be raped by someone you know") without understanding how statistics, and probability in particular, work.
In order to work out the probability of person X being raped you have to take into account how much time they spend doing certain activities. It's complex and requires an understanding of maths. The simple numbers of categories of rapist doesn't give you that information.
The MOJ, Home Office, and Office for National Statistics published a statistics bulletin in Jan 2013 "An Overview of Sexual Offending in England and Wales" . The link to the download is here. It includes all sexual offences not just rapes.
On p. 13 -14 it states "risk of victimisation for females varied by other personal and household characteristics" It lists the risk factors - among which is
"Sexual victimisation rates were higher for females who reported visiting a pub at least once a week (4.3 per cent) or a night club one to three times a month (5.6 per cent). Those who visited a night club at least four times a month had the
highest victimisation rate of any characteristic covered by the CSEW (9.2 per
cent). "
Trying to tell young women that drink is not a factor is, quite frankly, irresponsible. (unless you want to argue that it's the music in the clubs that is the key factor here, not the alcohol).
I repeat, the assessment of risk is not something you can do from the simple numbers some of you have been throwing around. Some patterns of behaviour bring with them more risk. It is not victim blaming to look at the statistics and point this out.