Predictive models of recurrent implantation failure in patients receiving ART treatment based on clinical features and routine laboratory data

Table 4 Assisted reproduction outcomes of subsequent transfer cycles in RIF patients

Pregnancy outcome	RIF
No. of ET cycles (n)	316
Live birth rate, No. (%)^a	116/316(36.71)
Biochemical pregnancy rate, No. (%)^b	149/316(47.15)
Clinical pregnancy rate, No. (%)^c	135/316(42.72)
Pregnancy loss, No. (%)	33/149(22.15)
Biochemical pregnancy loss	14/149(9.40)
Clinical pregnancy loss	19/149(12.75)

^a Live birth was defined as the delivery of a live-born infant after 28 weeks or more of gestation. ^b Biochemical pregnancy was defined as a serum human chorionic gonadotropin level greater than 10 mIU/mL. ^c Clinical pregnancy was defined as the observation of an intrauterine gestational sac on an ultrasonographic scan.

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