The full paper would give better context of that statement. It’s quite accessible and worth reading. The thing that is consistent across all studies, nations and decades is that false accusations are rare.

It turns out this is actually a fairly difficult topic to accurately measure if for no other reason that a lot of cases (Particularly earlier ones) boil down to ‘he said, she said’. Then there is the matter that lots of sexual assault cases go unreported - or are dropped for assorted reasons. Unreported assaults are a huge factor among certain cultural groups.