“The heated public discourse about the frequency of false rape allegations often makes no reference to actual research. When the discourse does make reference to research, it often founders on the stunning variability in research findings on the frequency of false rape reports. A recently published comprehensive review of studies and reports on false rape allegations listed 20 sources whose estimates ranged from 1.5% to 90% (Rumney, 2006). However, when the sources of these estimates are examined carefully it is clear that only a fraction of the reports represent credible studies and that these credible studies indicate far less variability in false reporting rates."
Lisak, D., Gardinier, L., Nicksa, S. C., & Cote, A. M. (2010). False allegations of sexual assualt: an analysis of ten years of reported cases. Violence Against Women, 16(12), 1318-1334.”