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KMID : 0191120160310060939
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Journal of Korean Medical Science
2016 Volume.31 No. 6 p.939 ~ p.949
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Percentile Distributions of Birth Weight according to Gestational Ages in Korea (2010-2012)
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Lee Jin-Kyoung
Jang Hye-Lim
Kang Byung-Ho
Lee Kyung-Suk
Choi Yong-Sung
Shim Kye-Shik
Lim Jae-Woo
Bae Chong-Woo
Chung Sung-Hoon
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Abstract
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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.
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KEYWORD
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Birth Weight, Singleton, Multiple Birth, Newborn, Gestational Age
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