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Table 1 Clinical 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
  (106 cycles) (226 cycles)  
Patient age at transfer (years) 33.1 ± 4.4 32.5 ± 4.1 0.171
BMI (kg/m 2 ) 23.38 ± 3.3 24.19 ± 4.6 0.105
No. of primary infertility 68 (64.2) 139 (61.5) 0.643
Reason for infertility    
  Female factor 59 (55.7) 114 (50.4) 0.375
Male factor 18 (17.0) 46 (20.4) 0.468
Others 29 (27.4) 66 (29.2) 0.729
Method of fertilization    
IVF 64/106 (60.4) 136/226 (60.2) 0.972
ICSI 40/106 (37.7) 86/226 (38.1) 0.956
Half ICSI 2/106 (1.9) 4/226 (1.7) 0.941
Mean number of embryos transferred 1.39 ± 0.52 1.31 ± 0.53 0.193
  1. Values are mean ± SD or n/total (%).