Fig. 1

Patient disposition: a all patients enrolled in Registry; b donor oocyte and vitrification subgroup analyses. Patients included in the donor oocyte subgroup analysis are circled with a solid line and those included in the vitrification subgroup analysis are circled with a dashed line. ^a Pre-freeze discontinuation patients denotes enrolled patients who were withdrawn before oocyte retrieval or for whom oocyte retrieval failed (ie, patients who had no oocytes to freeze)