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Table 3 Neonatal parameters of open and closed vitrification

From: Neonatal outcomes after the transfer of vitrified blastocysts: closed versus open vitrification system

  Open vitrification Closed vitrification P value
Babies born/transferred blastocysts 52/147 (35.4) 80/295 (27.1) 0.074
Male rate 29/52 (55.8) 41/80 (51.3) 0.611
Female rate 23/52 (44.2) 39/80 (48.7) 0.611
Multiple birth rate 11/41 (26.8) 10/70 (14.3) 0.103
Singletons 30 60  
Twins 11 10  
Stillbirth rate /transfer 1/103 (0.97) 0 0.321
  1. Values are n or n/total (%).