Fig. 3. Cumulative pregnancy rates in danazol-treated and untreated patients with minimal endometriosis. The cumulative pregnancy rate in an ideal fertile population is also shown for comparison. (Bayer SR, Seibel MM, Saffan DS et al: The efficacy of danazol treatment for minimal endometriosis in infertile women: A prospective randomized study. J Reprod Med 33:179, 1988)