title: 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 (3(rd)-97(th)) 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.
authors.affiliation: Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea .
authors.forename: Jin Kyoung
authors.identifier: 0000-0001-9552-8446
authors.initials: JK
authors.lastname: Lee
authors.affiliation: Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea .
authors.forename: Hye Lim
authors.identifier: 0000-0003-2113-8052
authors.initials: HL
authors.lastname: Jang
authors.affiliation: Department of Medicine, Graduate School, Kyung Hee University, Seoul, Korea .
authors.forename: Byung Ho
authors.identifier: 0000-0002-1690-7753
authors.initials: BH
authors.lastname: Kang
authors.affiliation: Department of Pediatrics, CHA Bundang Medical Center, CHA University, Seongnam, Korea .
authors.forename: Kyung-Suk
authors.identifier: 0000-0002-6300-1348
authors.initials: KS
authors.lastname: Lee
authors.affiliation: Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea .
authors.forename: Yong-Sung
authors.identifier: 0000-0001-9181-7849
authors.initials: YS
authors.lastname: Choi
authors.affiliation: Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea .
authors.forename: Kye Shik
authors.identifier: 0000-0003-4958-9840
authors.initials: KS
authors.lastname: Shim
authors.affiliation: Department of Pediatrics, College of Medicine, Konyang University, Daejon, Korea .
authors.forename: Jae Woo
authors.identifier: 0000-0003-2001-0727
authors.initials: JW
authors.lastname: Lim
authors.affiliation: Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea .
authors.forename: Chong-Woo
authors.identifier: 0000-0002-0965-5674
authors.initials: CW
authors.lastname: Bae
authors.affiliation: Department of Pediatrics, Kyung Hee University School of Medicine, Seoul, Korea .
authors.forename: Sung-Hoon
authors.identifier: 0000-0002-0352-9722
authors.initials: SH
authors.lastname: Chung
mesh_terms: D001724:Birth Weight; D005260:Female; D005865:Gestational Age; D057238:Growth Charts; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D012016:Reference Values; D056910:Republic of Korea
keywords: Birth Weight; Gestational Age; Multiple Birth; Newborn; Singleton