Percentile Distributions of Birth Weight according to Gestational Ages in Korea (2010-2012)

Abstract

The Pediatric Growth Chart (2007) is used as a standard reference to evaluate weight and height percentiles of Korean children and adolescents. Although several previous studies provided a useful reference range of newborn birth weight (BW) by gestational age (GA), the BW reference analyzed by sex and plurality is not currently available. Therefore, we aimed to establish a national reference range of neonatal BW percentiles considering GA, sex, and plurality of newborns in Korea. The raw data of all newborns (470,171 in 2010, 471,265 in 2011, and 484,550 in 2012) were analyzed. Using the Korean Statistical Information Service data (2010–2012), smoothed percentile curves (3rd–97th) by GA were created using the lambda-mu-sigma method after exclusion and the data were distinguished by all live births, singleton births, and multiple births. In the entire cohort, male newborns were heavier than female newborns and singletons were heavier than twins. As GA increased, the difference in BW between singleton and multiples increased. Compared to the previous data published 10 years ago in Korea, the BW of newborns 22–23 gestational weeks old was increased, whereas that of others was smaller. Other countries' data were also compared and showed differences in BW of both singleton and multiple newborns. We expect this updated data to be utilized as a reference to improve clinical assessments of newborn growth.

High diagnostic yield of clinically unidentifiable syndromic growth disorders by targeted exome sequencing

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“…Ethics approval was obtained from the Institutional Review Boards of The Catholic University of Korea. We selected SGA (defined at birth weight less than the 10th percentile for gestational age based on sex-specific national growth charts [ 8 ]) neonates, from all consecutive singleton pregnancies resulting in a preterm neonate (gestational age between 29 and 34 complete weeks of gestation). The standard recommendation for ACS was up to 34 weeks of gestation, so the neonate born until 34 complete gestational weeks were included in this study, who exposed ACS before 34 weeks and had delivered within one weeks.…”