Disappearing seasonality in birthweight
Access Status
Authors
Date
2016Type
Metadata
Show full item recordCitation
Source Title
ISSN
Collection
Abstract
© 2016 Wiley Periodicals, Inc.Objectives: We estimated seasonality in birthweight over time and assessed how seasonality changed. Methods: We analyzed all full-term singletons (N = 8,268,693) born in South Korea in 1997–2014. We first pooled all years and regressed birthweight on birth season while flexibly controlling for a large set of covariates. We then repeated the analysis by birth year and charted the trends in seasonality in birthweight. Results: When we pooled all years, babies born in winter were the heaviest, while those born in summer the lightest; the difference in birthweight was about 11 g. When we analyzed the data by birth year, however, seasonality almost disappeared by the end of the period. Conclusions: Whatever causes the seasonality has lost its influence in Korea. Replication studies can determine whether other countries exhibit the same patterns. Am. J. Hum. Biol. 28:767–773, 2016. © 2016Wiley Periodicals, Inc.
Related items
Showing items related by title, author, creator and subject.
-
Sohn, Kitae (2018)© 2018 Taylor & Francis. Young wives in South Korea often dread New Year’s Day and Thanksgiving Day because they assume the burden of cooking, cleaning, and other household chores. We used their offspring’s birthweight ...
-
Sohn, Kitae (2017)© 2017 The European Society of Contraception and Reproductive Health. Purpose: As women in developed countries tend to delay childbearing, it becomes more important to understand the relationship of advanced maternal age ...
-
Adane, A.A.; Shepherd, Carrington ; Walker, R.; Bailey, Helen ; Galbally, M.; Marriott, R. (2023)Objective: Maternal mental disorders have been associated with adverse perinatal outcomes such as low birthweight and preterm birth, although these links have been examined rarely among Australian Aboriginal populations. ...