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Table 3 Multivariate logistic regression model of sex ratio among singleton births following single blastocyst frozen embryo transfer (FET) cycles in relation to blastocyst quality and morphology

From: Does the sex ratio of singleton births after frozen single blastocyst transfer differ in relation to blastocyst development?

Variable

aOR(95% CI)

P value

 Good

1.57 (1.24 ~ 2)

< 0.001

 Poor

Reference

 

Expansion degree

 4

Reference

 

 5

0.96 (0.61 ~ 1.49)

0.843

 6

1.63 (0.89 ~ 2.99)

0.111

Inner cell mass

 A

0.71 (0.49 ~ 1.01)

0.059

 B

Reference

 

Trophectoderm

 A

1.4 (0.91 ~ 2.16)

0.128

 B

1.71 (1.33 ~ 2.21)

< 0.001

 C

Reference

 
  1. Note: Sex ratio adjusted for age, BMI, type of fertilization, day of embryo transfer. P < 0.05 was considered statistically significant. BMI = body mass index; CI = confidence interval