Which factors are most predictive for live birth after in vitro fertilization and intracytoplasmic sperm injection (IVF/ICSI) treatments? Analysis of 100 prospectively recorded variables in 8,400 IVF/ICSI single-embryo transfers

A model predicting live birth rate after single-embryo transfers with excellent calibration includes seven predictors, of which one - female height - has not previously been described.

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Volume 107, Issue 3, Pages 641–648


Katarina Kebbon Vaegter, M.D., Tatevik Ghukasyan Lakic, M.Sc., Matts Olovsson, M.D., Ph.D., Lars Berglund, M.Sc., Ph.D., Thomas Brodin, M.D., Ph.D., Jan Holte, M.D., Ph.D.



To construct a prediction model for live birth after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) treatment and single-embryo transfer (SET) after 2 days of embryo culture.


Prospective observational cohort study.


University-affiliated private infertility center.


SET in 8,451 IVF/ICSI treatments in 5,699 unselected consecutive couples during 1999–2014.


A total of 100 basal patient characteristics and treatment data were analyzed for associations with live birth after IVF/ICSI (adjusted for repeated treatments) and subsequently combined for prediction model construction.

Main Outcome Measure(s)

Live birth rate (LBR) and performance of live birth prediction model.


Embryo score, treatment history, ovarian sensitivity index (OSI; number of oocytes/total dose of FSH administered), female age, infertility cause, endometrial thickness, and female height were all independent predictors of live birth. A prediction model (training data set; n = 5,722) based on these variables showed moderate discrimination, but predicted LBR with high accuracy in subgroups of patients, with LBR estimates ranging from <10% to >40%. Outcomes were similar in an internal validation data set (n = 2,460).


Based on 100 variables prospectively recorded during a 15-year period, a model for live birth prediction after strict SET was constructed and showed excellent calibration in internal validation. For the first time, female height qualified as a predictor of live birth after IVF/ICSI.

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Fertility and Sterility

Editorial Office, American Society for Reproductive Medicine

Fertility and Sterility® is an international journal for obstetricians, gynecologists, reproductive endocrinologists, urologists, basic scientists and others who treat and investigate problems of infertility and human reproductive disorders.