highly significantP < 0.001
The pooled effect size verified that antioxidant supplementation exerts a highly significant, positive impact on increasing the number of high-quality embryos retrieved [MD = 1.08 (95%CI: 0.69–1.47), P < 0.001] ( Table 3 ; Figure 3C ). 3.4.4 Live birth Only 3 studies reported live birth rates.