Table 4.

Summary of results of meta-analyses of comparison between sequential transfer and blastocyst transfer.

Outcome indicator	Studies	Samples	OR (95% Cl)	P value	Heterogeneity	Adjusted OR (95% Cl)	Adjusted p value
Chemical pregnancy rate	2	322	1.32 (0.85–2.06)	0.22	0%	/	/
Clinical pregnancy rate	7	1,089	1.68 (1.12–2.53)	0.01	59%	1.80 (1.12–2.89)	0.02
Ongoing pregnancy rate	3	476	1.59 (0.61–4.13)	0.34	81%	1.50 (0.28–8.14)	0.64
Implantation rate	4	1,384	0.98 (0.67–1.41)	0.90	40%	1.01 (0.57–1.81)	0.96
Multiple pregnancy rate	7	402	0.85 (0.50–1.45)	0.56	19%	0.89 (0.45–1.74)	0.73
Miscarriage rate	6	355	1.24 (0.71–2.19)	0.45	0%	1.52 (0.78–2.97)	0.22