Detection of oral HPV analysed by number of reported sexual partners for each sexual practice over three non-overlapping time periods.

CI confidence interval.(a) For each sexual practice the multivariate model included three variables. These were the number of sexual partners for that sexual practice, in each of the three non-overlapping time periods: previous two weeks, from>2 to 52 weeks ago, more than one year ago.b) reported number of partners over a lifetime for this sexual practice, minus the reported number for the previous year.c) Oral sexual practices defined as involving the study participant’s mouth.