Table 1: Patient characteristics and cycle outcomes.

eSBT ( 𝑛 = 1 0 8 )eDBT ( 𝑛 = 4 1 5 )P value

Age, mean [SD]33.9 [3.2]35.0 [3.6]0.0006a
Prior live birth (%)28/108 (25.9)76/339 (18.3)0.08
Oocytes, mean [SD]17.0 [6.3]17.2 [6.5]0.58
Embryos, mean [SD]12.4 [5.8]12.2 [4.9]0.84
Blastocysts, meand [SD]6.5 [3.8]6.2 [3.0]0.77
ICSI (%)50/108 (46.3)194/415 (46.7)0.80
PGD (%)9/108 (8.3)25/415 (6.0)0.28
Clinical PR (%)62/108 (57.4)207/415 (49.9)0.16
Live birth/ongoing PR (%)52/108 (48.1)173/415 (41.7)0.22
MGR (%)1/62 (1.6)67/207 (32.4)0.00b
Cesarean rate (%)12/38 (31.6)61/161 (37.9)0.47
Birthweight, mean (g)3226.22832.20.001c

a 𝑃 < 0 . 0 1 : t-test.
b 𝑃 < 0 . 0 0 0 0 5 : chi-square test.
c 𝑃 < 0 . 0 0 5 : t-test.
dBlastocysts: mean includes blastocysts cryopreserved and transferred.