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Table 4 Multifactor analysis results of FET outcome-related factors

From: Gonadotropin-releasing hormone agonist combined with hormone replacement therapy does not improve the reproductive outcomes of frozen-thawed embryo transfer cycle in elderly patients: a retrospective study

Reproductive outcome Live birth rate Abortion rate
Value OR value(95% CI) P value OR value(95% CI) P value
Age (y) 0.728(0.672–0.789) < 0.001*** 1.316(1.177–1.471) < 0.001***
AFC 1.045(1.019–1.071) 0.0006*** 0.968(0.934–1.003) 0.0758
No of embryos transferred 1 Ref.   Ref.  
2 1.937(1.302–2.881) 0.0011** 0.525(0.297–0.928) 0.0267*
3 2.613(1.712–3.987) < 0.001*** 0.403(0.220–0.739) 0.0033**
Embryos transferred Cleavage stage embryo Ref.   Ref.  
Blastocyst 1.288(0.958–1.731) 0.0936 0.44(0.267–0.726) 0.0013**
FET strategy GnRHa-HRT Ref.   Ref.  
HRT 1.358(0.911–2.024) 0.1333 0.711(0.428–1.181) 0.1881
  1. *P < 0.05, **P < 0.01, ***P < 0.001 for logistic regression
  2. Abbreviations: OR odds ratio; CI 95% confidence interval; AFC antral follicle count; FET frozen-thawed embryo transfer