Supplementary Table 7a. Clinical pregnancy rate, delivery rate and gestational order according to the number of embryos transferred in Fresh OD in 2018.
Number of embryos transferred	Embryo transfers		Clinical pregnancies		Deliveries
	Number	%	Number	CPR (%)	Number of deliveries	Delivery rater per embryo transfer (%)	Singleton (n)	Singleton (%)	Twin (n)	Twin (%)	≥ Triplets (n)	≥ Triplets (%)
1	2496	36.2	1060	42.5	677	27.1	666	98.4	11	1.6	0	0.0
2	3405	49.3	1746	51.3	1291	37.9	906	70.2	382	29.6	3	0.2
≥3	1002	14.5	557	55.6	420	41.9	262	62.4	147	35.0	11	2.6
Total	6903	100.0	3363	48.7	2388	34.6	1834	76.8	540	22.6	14	0.6