Table 5 Embryo developmental rate and morphological grading associated with SSR in day 6 blastocyst transfer cycles.

From: The association of embryo developmental rate and morphological grading with neonatal sex ratio

 

Univariate OR (95% CI)

Multivariate OR (95% CI)

Adjusted P

Expansion stage

 3

Refer.

  

 4

1.48 (0.24–8.99)

1.71 (0.27–10.86)

0.568

 5

2.46 (0.38–15.87)

3.0 (0.44–20.45)

0.261

ICM

 A

Refer.

  

 B

1.59 (0.66–3.86)

2.11 (0.77–5.80)

0.147

 C

1.58 (0.56–4.41)

2.29 (0.74–7.12)

0.152

TE

 A

Refer.

  

 B

1.32 (0.46–3.75)

1.12 (0.34–3.70)

0.851

 C

0.95 (0.31–2.93)

0.86 (0.25–2.97)

0.807

  1. Multivariate OR and adjusted P controlled for parental age, maternal BMI, ovarian stimulation protocols, infertility diagnoses, sperm separation methods, insemination methods and cycle type.
  2. ICM, inner cell mass; TE, trophectoderm.
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