Fig. 1

The total number of individually identifiable entries in the Swedish National Cervical Screening Registry NKCx. Historically most entries used to be cytology results, but in recent years most entries are HPV test results. Cytologies, histopathologies and HPV tests are complete since 1995, with partial data registered before that. Individually identifiable invitations and requests to opt out of the screening program are completee since 2005, with partial data registered before that.