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Comparison of vaginal self‐sampling and cervical sampling by medical professionals for the detection of HPV and CIN2 +: A randomized study
Author(s) -
Aarnio Riina,
Isacson Isabella,
Sanner Karin,
Gustavsson Inger,
Gyllensten Ulf,
Olovsson Matts
Publication year - 2021
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.33482
Subject(s) - medicine , colposcopy , cervical intraepithelial neoplasia , sampling (signal processing) , cervical cancer , gynecology , randomized controlled trial , human papillomavirus , obstetrics , surgery , cancer , filter (signal processing) , computer science , computer vision
Abstract Primary screening with human papillomavirus (HPV) test is more effective in reducing cervical cancer incidence than cytology and it also offers the opportunity to self‐sample. We conducted a randomized study to compare vaginal self‐sampling with cervical sampling by medical professionals for HPV testing concerning prevalence of HPV and detection of cervical intraepithelial neoplasia (CIN) of grade 2 or worse (CIN2+) or grade 3 or worse (CIN3+) in primary screening. In total, 11 951 women aged 30‐60 years were randomized into two groups, 5961 for self‐sampling (SS arm) and 5990 for sampling by medical professionals (SMP arm). Sampling was performed with a RoversViba‐brush in the SS arm and a cytobrush in the SMP arm. All samples were applied to an indicating FTA elute card and analyzed for HPV using a clinically validated real‐time PCR test (hpVIR). All HPV‐positive women performed repeated sampling about 6 months later using the same procedure as used initially. All HPV‐positive women in the second sampling were referred to colposcopy. The prevalence of HPV in the first test did not differ between the SS arm (6.8%, 167/2466) and the SMP arm (7.8%, 118/1519) ( P = .255). The prevalence of CIN2+ per 1000 screened women was 17 (43/2466 × 1000) (95%CI 13‐24) in the SS arm and 21 (32/1519 × 1000) (95%CI 15‐30) in the SMP arm. For CIN3+, the prevalence per 1000 screened women was 14 (35/2466 × 1000) (95%CI 10‐20) in the SS arm and 15 (23/1519 × 1000) (95%CI 10‐23) in the SMP arm. In conclusion, self‐sampling and sampling by medical professionals showed the same prevalence of HPV and detection rate of CIN2+ and CIN3+ in histology.