What are the novel findings of this work?This analysis of the largest nuchal translucency (NT) database in the USA, over a 15-year period from January 2005 to December 2019, showed that ongoing evaluation and a requirement for quality maintenance enabled a diverse group of practitioners to maintain a narrow range of NT ultrasound measurements. Provider characteristics which affected significantly the NT median multiples of the median included annual NT scan volume, duration of participation in the quality review program, alternative initial credentialing pathway and number of NT-credentialed providers listed at the same practice.
What are the clinical implications of this work?These data should be considered not just as a model for the maintenance of optimal NT measurement but also, in the broader context, as a means of assuring obstetric quality performance and care. The data suggest that, through application of quality review techniques, large heterogeneous groups of practitioners can maintain consistency of care.