Efficacy of Intrauterine Device in the Treatment of Intrauterine Adhesions

Table 2

The classification systems of included studies.

American Fertility Society (AFS), 1988	Stage I, stage II, stage III
European Society of Hysteroscopy (ESH), 1989	Stage I, stage II, IIa, or III, stage IIIa, IIIb, or IV
European Society of Gynecological Endoscopy (ESGE), 1995	Stage I, stage II, IIa, or III stage IV, Va, or Vb
March, 1978	Mild, moderate, severe