Prevalence of Small-for-Gestational-Age and Its Mortality Risk Varies by Choice of Birth-Weight-for-Gestation Reference Population

We use data from rural Nepal and South India to compare the prevalence of small-for-gestational-age (SGA) and neonatal mortality risk associated with SGA using different birth-weight-for-gestation reference populations. We identified 46 reference populations in low-, middle-, and high-income countri...

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Vydáno v:	PloS one Ročník 9; číslo 3; s. e92074
Hlavní autoři:	Katz, Joanne, Wu, Lauren A., Mullany, Luke C., Coles, Christian L., Lee, Anne C. C., Kozuki, Naoko, Tielsch, James M.
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	United States Public Library of Science 18.03.2014 Public Library of Science (PLoS)
Témata:	Age Biology and Life Sciences Birth Birth Weight Childbirth & labor Childrens health Female Females Gestation Gestational Age Health aspects Health risks Humans Income India - epidemiology Infant Infant mortality Infant Mortality - ethnology Infant, Newborn Infant, Premature Infant, Small for Gestational Age Infants Intensive farming Low income areas Low income groups Male Males Medicine and Health Sciences Mortality Mortality risk Neonates Nepal - epidemiology Newborn babies Newborn infants Physical Sciences Population Population studies Populations Pregnancy Prenatal development Prevalence Public health Reference Values Research and Analysis Methods Risk Rural Population Sex Factors Small for gestational age Womens health Nepal India United States > US Maryland Baltimore Maryland
ISSN:	1932-6203, 1932-6203
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Shrnutí:	We use data from rural Nepal and South India to compare the prevalence of small-for-gestational-age (SGA) and neonatal mortality risk associated with SGA using different birth-weight-for-gestation reference populations. We identified 46 reference populations in low-, middle-, and high-income countries, of which 26 met the inclusion criteria of being commonly cited and having numeric 10th percentile cut points published. Those reference populations were then applied to populations from two community-based studies to determine SGA prevalence and its relative risk of neonatal mortality. The prevalence of SGA ranged from 10.5% to 72.5% in Nepal, and 12.0% to 78.4% in India, depending on the reference population. Females had higher rates of SGA than males using reference populations that were not sex specific. SGA prevalence was lowest when using reference populations from low-income countries. Infants who were both preterm and SGA had much higher mortality risk than those who were term and appropriate-for-gestational-age. Risk ratios for those who are both preterm and SGA ranged from 7.34-17.98 in Nepal and 5.29-11.98 in India, depending on the reference population. These results demonstrate the value of a common birth-weight-for-gestation reference population that will facilitate comparisons of SGA prevalence and mortality risk across research studies.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 Conceived and designed the experiments: JK LAW ACL. Analyzed the data: JK LAW NK. Contributed reagents/materials/analysis tools: JK LCM CLC JT. Wrote the paper: JK. Competing Interests: Procter and Gamble Company provided commodity support for the Nepal Chlorhexidine study. There are no further patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.
ISSN:	1932-6203 1932-6203
DOI:	10.1371/journal.pone.0092074