Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment

Objective. This study examined how family environmental characteristics served as mediators in the relationship between socioeconomic conditions and infant growth in a cohort of Chilean infants. Methods. We studied 999 infants, born between 1991 and 1996, from a longitudinal cohort which began as an...

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Main Authors: D. E. Kang Sim, M. Cappiello, M. Castillo, B. Lozoff, S. Martinez, E. Blanco, S. Gahagan
Format: Article
Language:English
Published: Wiley 2012-01-01
Series:International Journal of Pediatrics
Online Access:http://dx.doi.org/10.1155/2012/354060
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author D. E. Kang Sim
M. Cappiello
M. Castillo
B. Lozoff
S. Martinez
E. Blanco
S. Gahagan
author_facet D. E. Kang Sim
M. Cappiello
M. Castillo
B. Lozoff
S. Martinez
E. Blanco
S. Gahagan
author_sort D. E. Kang Sim
collection DOAJ
description Objective. This study examined how family environmental characteristics served as mediators in the relationship between socioeconomic conditions and infant growth in a cohort of Chilean infants. Methods. We studied 999 infants, born between 1991 and 1996, from a longitudinal cohort which began as an iron deficiency anemia preventive trial. SES (Graffar Index), the Life Experiences Survey, and the Home Observation for Measurement of the Environment (HOME) were assessed in infancy. Using path analysis, we assessed the relationships between the social factors, home environment, and infant growth. Results. During the first year, weight and length gain averaged 540 grams/month and 6.5 cm/month, respectively. In the path analysis model for weight gain, higher SES and a better physical environment were positively related to higher maternal warmth, which in turn was associated with higher average weight gain. Higher SES was directly related to higher average length gain. Conclusions. In our cohort, a direct relationship between SES and length gain developed during infancy. Higher SES was indirectly related to infant weight gain through the home environment and maternal warmth. As the fastest growing infants are at risk for later obesity, new strategies are needed to encourage optimal rather than maximal growth.
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series International Journal of Pediatrics
spelling doaj-art-b7ffd52b3ec547959a877b2162be67122025-02-03T07:26:06ZengWileyInternational Journal of Pediatrics1687-97401687-97592012-01-01201210.1155/2012/354060354060Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family EnvironmentD. E. Kang Sim0M. Cappiello1M. Castillo2B. Lozoff3S. Martinez4E. Blanco5S. Gahagan6Division of Child Development and Community Health, University of California, San Diego, 9500 Gilman Drive No. 0927, La Jolla, CA 92093-0927, USADivision of Child Development and Community Health, University of California, San Diego, 9500 Gilman Drive No. 0927, La Jolla, CA 92093-0927, USAInstitute of Nutrition and Food Technology (INTA), University of Chile, El Líbano 5524, Santiago, ChileCenter for Human Growth and Development, University of Michigan, Ann Arbor 300 North Ingalls, 10th Floor, Ann Arbor, MI 48109-5406, USADivision of Child Development and Community Health, University of California, San Diego, 9500 Gilman Drive No. 0927, La Jolla, CA 92093-0927, USADivision of Child Development and Community Health, University of California, San Diego, 9500 Gilman Drive No. 0927, La Jolla, CA 92093-0927, USADivision of Child Development and Community Health, University of California, San Diego, 9500 Gilman Drive No. 0927, La Jolla, CA 92093-0927, USAObjective. This study examined how family environmental characteristics served as mediators in the relationship between socioeconomic conditions and infant growth in a cohort of Chilean infants. Methods. We studied 999 infants, born between 1991 and 1996, from a longitudinal cohort which began as an iron deficiency anemia preventive trial. SES (Graffar Index), the Life Experiences Survey, and the Home Observation for Measurement of the Environment (HOME) were assessed in infancy. Using path analysis, we assessed the relationships between the social factors, home environment, and infant growth. Results. During the first year, weight and length gain averaged 540 grams/month and 6.5 cm/month, respectively. In the path analysis model for weight gain, higher SES and a better physical environment were positively related to higher maternal warmth, which in turn was associated with higher average weight gain. Higher SES was directly related to higher average length gain. Conclusions. In our cohort, a direct relationship between SES and length gain developed during infancy. Higher SES was indirectly related to infant weight gain through the home environment and maternal warmth. As the fastest growing infants are at risk for later obesity, new strategies are needed to encourage optimal rather than maximal growth.http://dx.doi.org/10.1155/2012/354060
spellingShingle D. E. Kang Sim
M. Cappiello
M. Castillo
B. Lozoff
S. Martinez
E. Blanco
S. Gahagan
Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment
International Journal of Pediatrics
title Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment
title_full Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment
title_fullStr Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment
title_full_unstemmed Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment
title_short Postnatal Growth Patterns in a Chilean Cohort: The Role of SES and Family Environment
title_sort postnatal growth patterns in a chilean cohort the role of ses and family environment
url http://dx.doi.org/10.1155/2012/354060
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