"This appears to be the source of the 1 in 6 figure (17.6%). But it's worth going deeper. If you look at percentage of women reporting rape since age 18 (taking out the child abuse and statutory rape cases, which they also treat in detail), it becomes 1 in 10 (9.6%), and of those over 61.9% were at the hands of their intimate partner, as opposed to an acquaintance or stranger. Also in the survey, in the rapes that were reported via a randomized telephone survey, in 66.9% of those cases, the perpetrator did not threaten to harm or kill the victim. (Which makes it no less a crime, of course, but people may have images of rape which involves a other physical injuries, by a stranger, in some dark and deserted place. The statistics simply don't bear that out.)"

This seems to be implying that "child abuse and statutory rape" should not be counted as rape and that rape "at the hands of their intimate partner" or where "the perpetrator did not threaten to harm or kill the victim" are not "real" rape.