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Table 5 Cumulative clinical outcome combining fresh and vitrified-warmed cycles in blastocyst and cleavage-stage transfer (age < 35 years)

From: Clinical outcome of fresh and vitrified-warmed blastocyst and cleavage-stage embryo transfers in ethnic Chinese ART patients

  Cleavage-stage transfer Blastocyst Transfer
No. of couples 284 194
Overall clinical pregnancies per couple, no. (%) 147/284(51.8) 136/194(70.1)a
Fresh embryo transfer, no. 129 69
Vitrified-warmed embryo transfer, no. 18 67
Cumulative multiple pregnancy rate, n (%) 62/147(42.2) 54/136(39.7)
Singleton pregnancy rate, no. 85 82
Twin pregnancy rate, no. 60 52
Triplets pregnancy rate, no. 2 2
  1. Note : Values are presented as number or number (%).
  2. a:significant difference between cleavage-stage transfer and blastocyst transfer groups (p<0.05).