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Title: Charts of thai fetal biometries: 1. Methodology
Authors: Dittakarn Boriboonhirunsarn
Vittaya Titapant
Prasert Sunsaneevithayakul
Teera Siwadune
Wiboolphan Thitadilok
Pornpimol Ruangvutilert
Mahidol University
Chonburi Regional Hospital
Keywords: Medicine
Issue Date: 1-Dec-2000
Citation: Journal of the Medical Association of Thailand. Vol.83, No.3 (2000), 284-291
Abstract: A cross-sectional study was conducted in order to construct new reference charts for Thai fetal biometries that are commonly used in obstetric ultrasound practice. We discussed and illustrated a sound appropriate study design and statistical analysis which lead to more valid results. A total of 621 normal pregnant women between 12-41 weeks of gestation and their fetuses were recruited. Each fetus was measured once at a randomly assigned gestational age specifically for the purpose of this study only. Stepwise linear regression technique was used to model the mean and its standard deviation as functions of gestational age. Goodness of fit and normality of the data were checked before the final models were chosen. Reference centiles were derived, taking into account the increasing variation as pregnancy proceeds. We demonstrated the stated technique with humerus data from the same study. Reference charts for other fetal biometries have been derived and are presented in subsequent papers.
ISSN: 01252208
Appears in Collections:Scopus 1991-2000

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