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Table 5 Morphometric parameters after thawing/warming for implanted and not implanted embryos in dataset 1. Differences between implanted and not implanted embryos were calculated for each parameter using linear regression (95% CI and p values)

From: Effect of day 3 embryo morphometrics and morphokinetics on survival and implantation after slow freezing-thawing and after vitrification-warming: a retrospective cohort study

Freezing method Parameter Implanted
Mean ± SD
Not implanted
Mean ± SD
Coefficient
implanted vs
not implanted
95% CI P
  n 6 42    
Slow freezing TCV, μm 3 666,658 ± 167,567 531,951 ± 143,637 134,721 −1689 to 271,131 0.0526
N blastomeres 9.0 ± 2.5 6.8 ± 2.4 2.2 −0.1 to 4.5 0.0557
% Symmetry 75.0 ± 7.2 77.1 ± 9.2 −1.9 −10.3 to 6.6 0.6465
  n 9 53a    
Vitrification TCV, μm 3 729,666 ± 102,954 693,512 ± 137,507 24,599 −76,439 to 125,638 0.6219
N blastomeres 9.4 ± 2.8 8.2 ± 2.4 1.2 −0.6 to 3.1 0.1883
% Symmetry 67.4 ± 9.3 71.5 ± 9.6 −4.0 −10.9 to 2.8 0.2364
  1. Random intercept correction was used to account for clustering
  2. Bonferroni-Holm method was used per freezing method to correct for multiple testing
  3. No morphometrics could be analyzed in compacted embryos
  4. a3 embryos were compacted after thawing