Outcomes and Measures
The primary outcome was cumulative livebirth rate, defined as the birth
rate of the first living neonate during the follow-up.
Secondary outcome measures were
time to first live birth, which was from the date of the first tubal
surgery to the date of the first delivery of a live neonate; biochemical
pregnancy, defined as a positive pregnancy test or serum HCG-level
greater than 5 IU/L; clinical miscarriage, defined as a spontaneous
pregnancy loss occurs after a confirmed intrauterine pregnancy (by
ultrasound or by histology); ectopic pregnancy, defined as an embryo
implanted outside the uterine cavity; and mode of conception, including
natural conception or IVF. In case of live birth, we reported
gestational age at delivery. Cumulative livebirth rate by natural
conception was also calculated in the neosalpingostomy group.