Fig. 2

Forest plots of independent influencing factors for failure to collect oocytes by multivariate analysis. bFSH = basal follicle-stimulating hormone; AMH = anti-Müllerian hormone; COS = controlled ovarian stimulation; ∆E2 = change in E2 level between the day before trigger and the trigger day; COS protocol (1: Agonist; 2: Antagonist; 3: PPOS; 4: Mild stimulation/natural cycle); ∆E2 (1: ≥ 150 pg/ml; 2: < 150 pg/ml and ≥ 0 pg/ml; 3: < 0 pg/ml); OR = odds ratio; CI = confidence interval.