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Table 1 Number of embryos and characteristics in the databases used in this study. Emrbyos in dataset 1 were used for measurement of morphometric characteristics both during fresh culture and after thawing/warming. Embryos in dataset 2 were used for measurement of morphokinetic parameters after thawing/warming

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

  Slow frozen
N (%)
Vitrified
N (%)
Total
N (%)
Embyos in dataset 1
Fresh
Total 159 127 286
Survived
(Survived / Total)
79 (49.7) 112 (88.2) 191 (66.8)
Not recovered
(Not recovered / Total)
8 (5.0) 1 (0.8) 9 (3.1)
Compacted at freezing
(Compacted at freezing / Survived + Not survived)
14 (9.3) 8 (6.3) 22 (7.9)
Transferred
(Transferred / Survived)
76 (96.2) 108 (96.4) 184 (96.3)
Implanted
(Implanted/ Transferred)
13 (17.1) 20 (18.5) 33 (17.9)
Transferred in SET or DET with 0% or 100% implantation
(Transferred in SET or DET with 0% or 100% implantation / Transferred)
71 (93.4) 89 (82.4) 160 (86.9)
Implanteda
(Implanted / Transferred in SET or DET with 0% or 100% implantation)
8 (11.3) 10 (11.2) 18 (11.2)
After thawing/warming
Totalb
(Total evaluated / Survived)
52 (65.8) 83 (74.1) 135 (70.7)
Compacted after thawing or warming
(Compacted after thawing or warming / Total evaluated)
0 (0.0) 3 (3.6) 3 (2.2)
Compacted after overnight culture
(Compacted after overnight culture / Total evaluated)
14 (26.9) 50 (60.2) 64 (47.4)
Transferred in SET or DET with 0% or 100% implantation
(Transferred in SET or DET with 0% or 100% implantation among total evaluated / Total evaluated)
48 (92.3) 65 (78.3) 113 (83.7)
Implantedc
(Implanted/ Transferred in SET or DET with 0% or 100% implantation)
6 (12.5) 9 (13.8) 15 (13.3)
Embryos in dataset 2
After thawing/warming
Total 35 55 90
Intact
(Intact/Total)
18 (51.4) 40 (72.7) 58 (64.4)
Resumed mitosis
(Resumed mitosis/Total)
22 (62.8) 45 (81.8) 67 (74.4)
Transferred in SET or DET with 0% or 100% implantation
(Transferred in SET or DET with 0% or 100% implantation / Total)
35 (100) 47 (85.4) 82 (91.1)
Implanted
(Implanted / Transferred in SET or DET with 0% or 100% implantation)
4 (11.4) 10 (18.2) 14 (17.1)
  1. aN implanted embryos among embryos transferred in SET or DET with 0% or 100% implantation
  2. bOnly survived embryos from which multilevel images were available after thawing or warming could be analyzed for morphometrics after thawing or warming
  3. cN implanted embryos among evaluated embryos after thawing/warming transferred in SET or DET with 0% or 100% implantation