To possess maternity matchmaking curves, gestational decades considering a reputable LMP try plotted up against CRL and you will BPD
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Due to the fact knowledge of early maternity is limited, intraobserver and you will interobserver reproducibility regarding fetal ultrasound proportions of 9 to fourteen months regarding gestation try analyzed for the 21 pregnancies. The fresh intraclass correlation coefficient (ICC) and you will coefficient from version (CV) have been calculated twenty two . The brand new ICC is greater than 0.98 while the related Curriculum vitae less than six% for everyone fetal biometry parameters. Mundane and Altman plots to evaluate agreement regarding measurements to own fetal biometry showed regular withdrawals; the new indicate change try to no and you may 95% out-of dimensions dropped inside 2SD of the indicate. The brand new 95% constraints away from contract getting differences in fetal biometry measurements ranging from and you may certainly operators in size dropped within this ten% of your own mean of the dimensions, indicating a good reproducibility twenty two . Therefore we can reliably create resource curves having fetal proportions away from early pregnancy onwards getting clinical aim.
To the BPD bend, specifications that were used for pregnancy dating was indeed excluded
Maternity benefit and you will information about labor and you will birth was in fact extracted from brand new midwife otherwise doctor exactly who attended the new birth.