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More than half of U.S. cervical cancer diagnoses occur in women who were not screened at the recommended intervals. To test whether providing an in-home vaginal swab kit for human papillomavirus (HPV) testing would result in higher rates of detection and treatment of cervical intraepithelial neoplasia grade ≥2 (CIN2+; a cervical cancer precursor) than usual care (annual reminders), investigators randomized almost 20,000 women enrolled at Kaiser Permanente Washington (age range, 30–64; not screened within the past 3 years and 5 months) to usual care with an HPV self-sampling kit sent by mail (intervention) or without (control). All participants were followed for up to 18 months.
Although a significantly higher proportion of women in the inter…