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Forest plots of miscarriage rate per embryo transfer. A) Pooled effect derived from NRSIs. B) Pooled effect derived from RCTs.
NRSIs: Non-randomized studies of interventions; RCTs: Randomized clinical trials; PGT-A: Preimplantation genetic testing for aneuploidy; OR: Odds ratio; 95%CI: 95% confidence interval
