1. Gonadotropin-releasing hormone antagonist use is associated with increased pregnancy rates in ovulation induction–intrauterine insemination to in vitro fertilization conversions, independent of age and estradiol level on the day of human chorionic gonadotropin administration 
Alexander M. Quaas, M.D., Ph.D., Stacey A. Missmer, Sc.D., Elizabeth S. Ginsburg, M.D. 
Fertility and Sterility 
Volume 93, Issue 2, Pages (January 2010)
DOI: /j.fertnstert
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Pregnancy rates in patients undergoing ovulation induction–IUI to IVF conversions stratified by GnRH agonist therapy. The difference between the groups was statistically significant in the multivariable logistic regression analysis, with an odds ratio for achieving pregnancy of 2.13 (95% CI = 1.03–4.39, P value = .04).
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

3. Figure 2
Odds ratios for intermediate cycle outcomes by antagonist exposure in linear regression model. The number of mature oocytes and the number of fertilized oocytes were statistically significantly higher in the group with prior antagonist exposure.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions