Fig. 1

Flowchart showing the number of participant samples processed on Xpert HPV and traditional PCR respectively. Xpert HPV identifies only certain high risk HPV types (HPV 16, 18/45, 31, 33, 35, 39, 51, 52, 56, 58, 59, 66, 68). Therefore, even under perfect agreement with traditional PCR, Xpert HPV would have deemed positive only 16 of the 27 PCR HPV positive samples. Other low risk HPV types detected by conventional PCR (HPV 7, 13, 27, 32, 42, 44, 72, 90, 107, 120) would have been deemed negative by Xpert HPV (represented by dotted boxes)