Table 2. Comparison of delivery rate per embryo transfer according to woman´s age category between eDET and TET, IVF/ICSI 2012-2013
Age category	eDET		TET		RR (CI 95%)
	Embryo transfers	Delivery rate (%)	Embryo transfers	Delivery rate (%)
≤ 34	5295	45.04	2174	35.51	1.27 (1.19-1.35)
35-39	4454	39.25	4459	30.70	1.28 (1.21-1.35)
40-42	1030	24.17	2788	20.27	1.19 (1.04-1.36)
≥ 43	223	20.18	1213	13.44	1.5 (1.12-2.02)
TOTAL	11002	40.24	10634	26.98	1.49 (1.43-1.55)
eDET transfer of two embryos and at least one cryopreserved embryo; TET transfer of at least three embryos and no cryopreserved embryo; RR = relative risk; CI 95% = 95% confidence interval