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Table 3 Summary of results of meta-analyses of comparison between sequential transfer and blastocyst embryo transfer

From: Sequential cleavage and blastocyst embryo transfer and IVF outcomes: a systematic review

Outcome indicator Studies Samples Heterogeneity Effect model RR(95%CI) P value
Clinical pregnancy 4 513 P=0.11I2=51% Random 1.29 (0.90-1.85) 0.17
Embryo implantation 2 146 P=0.37I2=0% Fixed 0.86 (0.64-1.17) 0.34
Clinical miscarriage 4 242 P=0.99I2=0% Fixed 0.99 (0.68-1.44) 0.95
Multiple pregnancy 3 155 P=0.18I2=42% Random 0.85 (0.47–1.52) 0.58