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Contrasting socioeconomic gradients in small for gestational age and preterm birth in Argentina, 2003-2007.
MedLine Citation:
PMID:  23275946     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVES: To examine the socioeconomic gradients in birth outcomes among singleton infants in Argentina, 2003-2007. METHODS: We analyzed data of 3,230,031 singleton infants born in 2003-2007, obtained from vital statistics. Associations between birth outcomes [small for gestational age (SGA), low birth weight (LBW), and preterm birth (PTB)] and socioeconomic indicators (maternal education and area-based material deprivation quintiles) were assessed with logistic regression. RESULTS: The risk of SGA increased with higher socioeconomic disadvantage, but that of PTB decreased. Compared to mothers who attained a tertiary or university degree, mothers who did not complete primary school were more likely to have a SGA infant [adjusted OR (95 % CI): 1.65 (1.62, 1.68)], but less likely to deliver preterm [0.92 (0.90, 0.94)]. As a result of the conflicting trends in SGA and PTB, LBW exhibited inconsistent socioeconomic gradients. CONCLUSIONS: The excess risk of adverse birth outcomes associated with socioeconomic disadvantage was consistently reflected by SGA, but not by LBW and PTB. These findings challenge the usefulness of LBW as an indicator population health. Further research is needed to explain the reverse socioeconomic gradients in PTB.
Authors:
Marcelo Luis Urquia; John William Frank; Marcio Alazraqui; Carlos Guevel; Hugo Guillermo Spinelli
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-30
Journal Detail:
Title:  International journal of public health     Volume:  -     ISSN:  1661-8564     ISO Abbreviation:  Int J Public Health     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101304551     Medline TA:  Int J Public Health     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Centre for Research on Inner City Health, The Keenan Research Centre in the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Canada, urquiam@smh.ca.
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