AAGL Endo Classification

Allows surgeons to calculate AAGL’s endometriosis severity score.

The sum of the component scores across all anatomic sites defines the total score, which is used to determine the complexity stage.

The 3 cut points along the distribution of the AAGL total score were chosen using receiver operating characteristic curves to create 4 stages within the AAGL scoring system that most closely corresponded with the 4-level scale of surgical complexity for endometriosis designed to categorize each surgery on the basis of its highest-complexity task.

Stage 1 ≤ 8 points

Stage 2 9-15 points

Stage 3 16-21 points

Stage 4 >21 points