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Korean J Pediatr 2012 August;55(8) :280-285.
Published online 2012 July 06.        doi:
Birth statistics of high birth weight infants (macrosomia) in Korea
Byung-Ho Kang (Kang BH)1, Joo-Young Moon (Moon JY)1, Sung-Hoon Chung (Chung SH)2, Yong-Sung Choi (Choi YC)2, Kyung-Suk Lee (Lee KS)1, Ji-Young Chang (Chang JY)1, Chong-Woo Bae (Bae CW)1
1Department of Pediatrics, Kyung Hee University Hospital at Gangdong, Seoul, Korea
2Department of Medicine, Kyung Hee University Graduate School, Seoul, Kore
Corresponding Author: Chong-Woo Bae ,Tel: 010-3784-4150, Fax: 82-2-440-7175, Email:
Copyright © 2012 by The Korean Pediatric Society
Purpose: The authors analyzed the trend from the birth-related statistics of high birth weight infants (HBWIs) over 50 years in Korea from 1960 to 2010. Methods: We used 2 data sources, namely, the hospital units (1960s to 1990s) and Statistics Korea (1993 to 2010). The analyses include the incidence of HBWIs, birth weight distribution, sex ratio, and the relationship of HBWI to maternal age. Results: The hospital unit data indicated the incidence of HBWI as 3 to 7% in the 1960s and 1970s and 4 to 7% in the 1980s and 1990s. Data from Statistics Korea indicated the percentages of HBWIs among total live births decreased over the years: 6.7% (1993), 6.3% (1995), 5.1 % (2000), 4.5% (2000), and 3.5% (2010). In HBWIs, the birth weight rages and percentage of incidence in infants were 4.0 to 4.4 kg (90.3%), 4.5 to 4.9 kg (8.8%), 5.0 to 5.4 kg (0.8%), 5.5 to 5.9 kg (0.1%), and >6.0 kg (0.0%) in 2000 but were 92.2%, 7.2%, 0.6%, 0.0%, and 0.0% in 2009. The male to female ratio of HBWIs was 1.89 in 1993 and 1.84 in 2010. In 2010, the mother's age distribution correlated with low (4.9%), normal (91.0%), and high birth weights (3.6%): an increase in mother's age resulted in an increase in the frequency of low birth weight infants (LBWIs) and HBWIs. Conclusion: The incidence of HBWIs for the past 50 years has been dropping in Korea. The older the mother, the higher was the risk of a HBWI and LBWI. We hope that these findings would be utilized as basic data that will aid those managing HBWIs.
Keywords: Birth weight | Newborn infant | Fetal macrosomia | Incidence | Epidemiology
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