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Table 3 Embryo development and utilization data

From: Severe teratozoospermia and its influence on pronuclear morphology, embryonic cleavage and compaction

 

Group A

Group B

P value

Total embryos

901

861

 

Embryonic development, D1-D3

   

Syngamy (at 25 hours)

39%

34%

0.0516

Early cleavage (at 25 hours)

9%

9%

1.0000

Cleavage (D2 at 48 hours)

98%

99%

0.3833

Embryos with ≥ 6 cells (D3)

64%

66%

0.4543

Compaction

   

Embryos compacting (D4)

25%

36%

0.0007

Blastulation

   

Total embryos in extended culture

471

432

 

Overall blastulation rate

34%

38%

0.3297

Overall utilization

   

Embryos transferred

28%

30%

0.3865

Embryos frozen

34%

36%

0.3401

  1. Group A: ICSI was done using severe teratozoospermic sperm, 0-2% normal morphology, Group B: ICSI was done using dysmorphic sperm, 5-13% normal morphology. Yates-corrected Chi2 P values given above.