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. Author manuscript; available in PMC: 2014 Mar 23.
Published in final edited form as: Sex Transm Dis. 2007 Nov;34(11):849–855. doi: 10.1097/OLQ.0b013e318064c8c5

Fig. 1.

Fig. 1

A graph of the prevalence of cervical and vaginal α3/α15 and α9/α11 HPV types (adapted from reference 13) by age was fit using a cubic regression spline (see Methods) (cervical, square; vaginal, triangle; α3/α15, open symbol; α9/α11, solid symbol).