Biparietal diameter vs crown-rump length as standard parameter for late first-trimester pregnancy dating.

ABSTRACT:

Objective

To compare the precision of biparietal diameter (BPD) and crown-rump length (CRL) as predictors of gestational age in the human fetus in the late first and early second trimesters, using a population-based approach.

Methods

We constructed term and gestational-age prediction curves for first-trimester dating, based on 11 041 pregnancies with 12 260 measurements of CRL and/or BPD from a population-based Norwegian clinical database. We used a population-based approach with local linear quantile regression, combined with a time-to-event strategy that compensates for induced births. Term prediction precision was assessed by estimating and comparing the prediction residual curves using a time-to-event analysis. Individual differences in gestational-age predictions from C

SUBMITTER: Gjessing HK 

PROVIDER: S-EPMC11609919 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature