I found this article about rape resistance strategies
, which includes:
* Non-forceful verbal resistance (crying, pleading, etc.) is 4% effective in halting the attempted rape.
* Forceful verbal resistance (screaming, etc.) is 50-56% effective.
* Running away is 85% effective.
* Physical violence is 86% effective. Striking works better than shoving or wrestling.
* Armed resistance (knives, guns, etc.) is 99% effective, and furthermore reduces the rate of injury to the attempted rape victim below statistical significance.
* One third of the women who were sexually attacked did successfully avoid sexual contact by resisting.
This matches the resources I saw in my women's studies classes. It directly clashes with most advice on what to do if sexually assaulted. Of course, women who injure men are far more likely to be prosecuted and harshly punished, whereas men are frequently allowed to harm women. But in general, if someone attacks you and you are willing to hurt them, the odds of success are strongly in your favor.