Interobserver agreement of non-invasive diagnosis of endometriosis by transvaginal sonography (TVS)

Objectives: Evaluation of the interobserver agreement and accuracy of transvaginal sonography (TVS) for deep infiltrating endometriosis (DIE) and endometriomas. Methods: Sixty-seven consecutive patients were enrolled from January 2013 to January 2014 referred to a pelvic pain clinic and scheduled for laparoscopy and were prospectively examined by two experienced sonographers (observer A and B) independently and blinded to the others results. Gwet's first order agreement coefficient (Gwet's AC1) was used to calculate interobserver agreement and diagnostic accuracy of TVS as well as sensitivity, specificity, posit…