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Table 3 Clinical outcomes in fresh ET and FET groups

From: Fertility outcomes in women after controlled ovarian stimulation with gonadotropin releasing hormone agonist long protocol: fresh versus frozen embryo transfer

Outcomes Fresh ET (n = 5216) FET (n = 2598) 95 % CI P
Implantation, n (%) 5066 (48.6 %) 2433 (47.0 %) 1.103–1.315 < 0.001
Clinical Pregnancy, n (%) 3431 (65.8 %) 1737 (66.9 %) 0.918–1.139 0.683
Ectopic pregnancy, n (%) 153 (2.9 %) 109 (4.2 %) 0.601–1.168 0.297
Pregnancy loss, n (%) 316 (9.2 %) 215 (12.4 %) 0.997–1.066 0.072
Live birth, n (%) 2978 (57.1 %) 1425 (54.8 %) 1.037–1.332 0.012
  1. Note: Presented as n (%) for categoric variables. P value was adjusted for age, infertility duration, BMI, AMH, No. of oocytes retrieved and No. of available embryos by multivariate logistic regression analysis. BMI body mass index; AMH Anti-Mullerian Hormone