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Objective Most women referred for colposcopy are not diagnosed with cervical intraepithelial neoplasia grade 2 or worse (CIN 2+) but, nonetheless, are typically asked to return much sooner than their next routine screening interval in 3 to 5 years. An important question is how many subsequent negative Pap results, or negative Pap and human papillomavirus (HPV) cotest results, are needed before returning to an extended retesting interval.

Methods We estimated 5-year risks of CIN 2+ for 3 follow-up management strategies after colposcopy (Pap-alone, HPV-alone, and cotesting) for 20,319 women aged 25 years and older screened from 2003 to 2010 at Kaiser Permanente Northern California who were referred for colposcopy but for whom CIN 2+ was not initially diagnosed (ie,“women with CIN 1/negative colposcopy”).

Results Screening results immediately antecedent to CIN 1/negative colposcopy influenced …