CLYBL and Infertility: The model showed that the odds of a successful CLB decrease with older age (30–34 vs 25–29 years: OR=0.83, 95%CI=0.77, 0.89; 35–39 vs 25-29 years: OR=0.54, 95%CI=0.49, 0.60; ≥40 vs 25–29 years: OR=0.19, 95%CI=0.16, 0.23), overweight or obese (overweight vs normal weight: OR=0.86, 95%CI=0.80, 0.93; obese vs normal weight: OR=0.69, 95%CI=0.61, 0.79), uterine factor infertility (OR=0.88, 95%CI=0.78, 0.99) and higher basal FSH (6.79–8.20 vs ≤5.70: OR=0.89, 95%CI=0.82, 0.97; ≥8.21 vs ≤5.70: OR=0.64, 95%CI=0.59, 0.70).