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Table 4 Comparisons of pregnancy outcomes for single embryo transfers with expansion grade of 4

From: Assisted hatching of vitrified-warmed blastocysts prior to embryo transfer does not improve pregnancy outcomes

 

Assisted Hatched (n = 680)

Not Assisted Hatched (n = 62)

RR (95% CI)

P-value

Conception Rate

39.3% (267)

37.1% (23)

1.06 (0.76–1.48)

0.79

Implantation Rate

31.0%

25.8%

0.38

Clinical Pregnancy Rate

30.0% (204)

25.8% (16)

1.16 (0.75–1.80)

0.56

Clinical Pregnancy Loss Rate

28.8% (53)

15.4% (2)

1.87 (0.51–6.84)

0.52

Live Birth Rate

18.9% (125)

15.3% (9)

1.24 (0.67–2.31)

0.60