Samples collected for the Horizon study (n = 6,258), by age, screening history, and outcomes of cytology and Human Papillomavirus testing.

Abbreviations: NR = not relevant; NT = not tested.a Included samples.b Excluded samples.c Differences between included samples (total) and excluded samples, tested with χ2.d Information on age was missing for one sample. Hybrid Capture 2 testing was not undertaken on 23 samples.e Including atypical squamous cells cannot exclude high grade squamous intraepithelial lessions, atypical glandular cells, adenocarcinoma in situ, and carcinoma.f Numbers (%) of invalid samples, out of 5,064: cobas: 3 (