Predicting the sex of fetus in first trimester based on the crown-rump length
Abstract
Materials and methods: The initial study included 187 pregnant women who were between 5–10 weeks of gestation (model 1) and the actual study included 240 subjects who were between 5–13 weeks of singleton pregnancy (model 2). A logistic regression model was used to assess the probability of fetal sex based on crown-rump length (CRL), gestational sac volume (GSV), and gestational age.
Results: The study indicates that the sex of the fetus can be predicted with a high probability from ultrasound earlier than previously thought.
Conclusions: After 7 weeks of gestation, differences in the size of male and female fetuses start to become apparent. Male fetuses have on average higher CRL and GSV than female fetuses. This allows predicting male sex with a significantly higher probability.
Keywords
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DOI: https://doi.org/10.21164/pomjlifesci.843
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