Projected diagnostic yield in colposcopically-guided biopsy examinations processed at Alberta Hospital 2003–2007: Percent of exams where endocervical curettage (ECC) detected CIN2* or worse that would have been missed by cervical biopsy alone (cervical biopsy diagnosis less than CIN2) by patient age and referral cytology
*Cervical Intraepithelial Neoplasia Grade 2
Error bars indicate 95% confidence interval. Follow-up exams (n=6,346) are not presented as the diagnostic yield was 0.6% and not correlated with age (p=.99).