The frequency of breech presentation by gestational age at birth: a large population-based study.
cross_sectional · Level IV
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Abstract
From a study of birth records, breech presentation at delivery for each gestational age was found to be less frequent as compared with other reports about antenatal ultrasonographic examination. Selection bias or the effect of labor may account for the observed difference.
Medical subject headings
- Breech Presentation
- Gestational Age
- Labor, Obstetric