Top: Graph showing preference for terminal digits 0 and 5 for self-reported age. Bottom: Percentage of women with high-risk human papillomavirus (HR-HPV) shown using two different strategies for categorizing age. Abbreviations: IARC, International Agency for Research on Cancer.
Clarke et al. Infectious Agents and Cancer 2011 6:12 doi:10.1186/1750-9378-6-12