Abstract
Objectives
We examine disparities in birth weight and gestational age by ethnic ancestry in 2000–2011 in eight South American countries.
Methods
The sample included 60,480 singleton live births. Regression models were estimated to evaluate differences in birth outcomes by ethnic ancestry controlling for time trends.
Results
Significant disparities were found in seven countries. In four countries—Brazil, Ecuador, Uruguay, and Venezuela—we found significant disparities in both low birth weight and preterm birth. Disparities in preterm birth alone were observed in Argentina, Bolivia, and Colombia. Several differences in continuous birth weight, gestational age, and fetal growth rate were also observed. There were no systematic patterns of disparities between the evaluated ethnic ancestry groups across the study countries, in that no racial/ethnic group consistently had the best or worst outcomes in all countries.
Conclusions
Racial/ethnic disparities in infant health are common in several South American countries. Differences across countries suggest that racial/ethnic disparities are driven by social and economic mechanisms. Researchers and policymakers should acknowledge these disparities and develop research and policy programs to effectively target them.
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References
Auger N, Chery M, Daniel M (2012) Rising disparities in severe adverse birth outcomes among Haitians in Québec, Canada, 1981–2006. J Immigr Minor Health 14(2):198–208
Cardoso AM, Santos RV, Coimbra CE (2005) Infant mortality according to race/color in Brazil: what do the national databases say? Cad Saude Publica 21(5):1602–1608
Castilla EE, Orioli IM (2004) ECLAMC: the Latin-American collaborative study of congenital malformations. Community Genet 7:76–94
Chiavarini M, Bartolucci F, Gili A, Pieroni L, Minelli L (2012) Effects of individual and social factors on preterm birth and low birth weight: empirical evidence from regional data in Italy. Int J Public Health 57(2):261–268
Lau C, Rogers JM, Desai M, Ross MG (2011) Fetal programming of adult disease: implications for prenatal care. Obstet Gynecol 117:978–985
López-Camelo JS, Cabello PH, Dutra MG (1996) A simple model for the estimation of congenital malformation frequency in racially mixed populations. Braz J Genet 19(4):659–663
Nyarko KA, Lopez-Camelo J, Castilla EE, Wehby GL (2013) Explaining racial disparities in infant health in Brazil. Am J Public Health 103(9):1675–1684
Salam RA, Das JK, Bhutta ZA (2014) Impact of intrauterine growth restriction on long-term health. Curr Opin Clin Nutr Metab Care 17(3):249–254
Salzano FM, Sans M (2014) Interethnic admixture and the evolution of Latin American populations. Genet Mol Biol 37(1 Suppl):151–170 (review)
Varvarigou AA (2010) Intrauterine growth restriction as a potential risk factor for disease onset in adulthood. J Pediatr Endocrinol Metab 23:215–224
Wehby GL, McCarthy AM (2013) Economic gradients in early child neurodevelopment: a multi-country study. Soc Sci Med 78:86–95
Wehby GL, Castilla EE, Lopez-Camelo J (2010) The impact of altitude on infant health in South America. Econ Hum Biol 8(2):197–211
Wehby GL, Murray JC, McCarthy AM, Castilla EE (2011) Racial gaps in child health insurance coverage in four South American countries: the role of wealth, human capital, and other household characteristics. Health Serv Res 46(6pt2):2119–2138
Wehby GL, Nyarko KA, Lopez-Camelo JS (2014) Fetal health shocks and early inequalities in health capital accumulation. Health Econ 23:69–92
WHO—World Health Organization—world health statistics (2012) WHO Department of Health Statistics and Information Systems, Geneva. http://apps.who.int/iris/bitstream/10665/44844/1/9789241564441_eng.pdf?ua=1. Accessed 1 Oct 2013
Woodhouse C, Lopez Camelo J, Wehby GL (2014) A comparative analysis of prenatal care and fetal growth in eight South American countries. PLoS One 9(3):e91292
Acknowledgments
The study was supported by grant 1R03TW008110-01A2 from the National Institutes of Health/Fogarty International, USA and by Grant 1 R01 DE020895 from the National Institutes of Health/National Institute of Dental and Craniofacial Research. Additional support was received from the Agencia Nacional de Promoción Científica y Tecnológica, Ministerio de Ciencia y Técnica, Argentina.
Conflict of interest
The authors have no conflicts of interest in this work.
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Wehby, G.L., Gili, J.A., Pawluk, M. et al. Disparities in birth weight and gestational age by ethnic ancestry in South American countries. Int J Public Health 60, 343–351 (2015). https://doi.org/10.1007/s00038-014-0639-6
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DOI: https://doi.org/10.1007/s00038-014-0639-6