Reduced Use of Diagnostic Obstetric Ultrasound in Norway: Result of Consensus Panel Recommending Routine Screening in Pregnancy?

1990 
Purpose: To investigate the practice of obstetric ultrasound in Norway before and 2 years after a consensus conference recommending routine screening.Material, method: Two national representative materials sampled with a 2-year interval are compared.Results: The average number of examinations was reduced from 2.46 to 2.23 (p<=0.014). Obstetrical institutions practising screening examined their patients less frequently than non-screening institutions (2.10 vs. 2.75 times, p
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