• Daron G Ferris, Mark S Litaker, and ASCUS/LSIL Triage Study (ALTS) Group.
• Departments of Family Medicine and Obstetrics and Gynecology, 1423 Harper St, HH-100, Medical College of Georgia, Augusta, GA 30912, USA. dferris@mail.mcg.edu
• Am. J. Obstet. Gynecol. 2004 Dec 1; 191 (6): 1934-41.

ObjectiveThis study was undertaken to estimate the accuracy of colposcopy quality control review of subjects' digitized colposcopic images during the atypical squamous cells of undetermined significance/low-grade squamous intraepithelial lesion triage study (ALTS).Study DesignAfter colposcopic examination and the acquisition of 2 digitized cervical images, colposcopists recorded colposcopic diagnoses in a standardized computer database. The images were transferred by modem to colposcopy quality control reviewers for a blinded interpretation, including assessment of image quality. Reviewers' and colposcopists' diagnoses were compared with histologic diagnoses using standard contingency table methods.ResultsColposcopists and reviewers underdiagnosed 16.1% and 25.3% of subjects, and overdiagnosed 44.7% and 19.8% of subjects compared with histology, respectively. The sensitivity and specificity for detecting cervical intraepithelial neoplasia 2 or greater were 35.4% versus 23.2%, P < .0001, and 89.9% versus 95.0%, P < .0001, respectively, for colposcopists and reviewers.ConclusionColposcopy quality control by review of digitized colposcopic images in clinical trials warrants further evaluation if the accuracy can be improved.

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