Dahl et al reported a model for predicting successful external cephalic version. The authors are from Northwestern University and Yale University.
Patient selection: pregnant woman with fetal malpresentation
Goal of external cephalic version: manually rotate the fetus so that the head has a cephalic presentation
(1) body mass index (BMI) in kg per square meter
(3) placental location
(4) type of fetal malpresentation
-0.0314 * (BMI)
transverse or oblique
value of X =
= SUM(points for all of the parameters) + 1.1726
probability of successful external cephalic version =
= 1 / (1 + EXP((-1) * X))
• The area under the ROC curve is 0.67.
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