When the cervical biopsy , Papanicolaou smear , and HPV results were combined for the @ month follow-up visit , @ % of the @-FU group ( @ of @ ) had a documented normal biopsy , normal Papanicolaou smear , and negative HPV test compared with @ % in the observation group ( @ of @ ) ( relative risk , @ ; @ % confidence interval , @-@ @ ; P < @ ) .