Fig. 3From: Comparisons of benefits and risks of single embryo transfer versus double embryo transfer: a systematic review and meta-analysisForest-plot comparing the multiple pregnancy rate between single embryo transfer (SET) and double embryo transfer (DET) based on maternal age and embryo quality stratification. G/GG, a single good quality embryo (GQE) versus two GQEs; P/PP, a single non-good quality embryo (PQE) versus two PQEs; G/GP, a single GQE versus two embryos of mixed quality (GQE + PQE)Back to article page