Article
Evaluation of ultrasound‐estimated date of delivery in 17 450 spontaneous singleton births: do we need to modify Naegele's rule?
1 Jul 1999
Abstract excerpt
OBJECTIVE: To compare the size of error in the predicted date of delivery by biparietal diameter (BPD) and last menstrual period (LMP) in different clinical models. MATERIALS AND METHODS: Predicted dates of delivery were calculated in 14,805 spontaneous deliveries with a reliable date of LMP using two assumptions: average length of pregnancy of 280 and of 282 days. Errors in these calculated dates were tested...
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