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Are vitamin A and iron deficiencies re-emerging in urban Latin America? A survey of schoolchildren in Bogota, Colombia.
Food Nutr Bull. 2009 Jun; 30(2):103-11.FN

Abstract

BACKGROUND

In Latin America, the burden of vitamin A and iron deficiencies has been documented primarily in preschool-age children. There are few recent reports on the vitamin A and iron status of school-age children.

OBJECTIVE

We aimed to determine the prevalence and predictors of vitamin A and iron deficiencies in Colombian schoolchildren.

METHODS

We examined plasma retinol and ferritin concentrations in relation to socioeconomic and anthropometric factors in a representative sample of 2811 low- and middle-income children 5 to 12 years of age in Bogotá, Colombia.

RESULTS

The prevalence rates of deficiencies of vitamin A (plasma retinol < 0.70 micromol/L) and iron (plasma ferritin <15 microg/L) were 14% and 3%, respectively. In multivariate analysis, plasma retinol concentrations were positively associated with child's age and household's socioeconomic stratum, whereas ferritin concentrations were positively related to child's age, number of home assets, and having a nonsingle mother. Ferritin concentrations were much lower among girls than boys in the 11- and 12-year-old age group, whereas there were only small positive differences between girls and boys in younger children (p for interaction < .0001). Both vitamin A and iron deficiencies were independently associated with lower z-scores for body-mass-index-for-age, after adjustment for sociodemographic factors and C-reactive protein concentrations. Neither vitamin A nor iron status was related to height-for-age.

CONCLUSIONS

The prevalence rates of vitamin A and iron deficiencies among schoolchildren from Bogotd, Colombia, are not negligible. Both vitamin A and iron status are positively associated with socioeconomic status and anthropometric indices. The effect of improving vitamin A and iron status on physical growth and other functional outcomes needs to be further examined in this age group.

Authors+Show Affiliations

Harvard School of Public Health, Boston, Massachusetts 02115, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19689088

Citation

Maslova, Ekaterina, et al. "Are Vitamin a and Iron Deficiencies Re-emerging in Urban Latin America? a Survey of Schoolchildren in Bogota, Colombia." Food and Nutrition Bulletin, vol. 30, no. 2, 2009, pp. 103-11.
Maslova E, Mora-Plazas M, Forero Y, et al. Are vitamin A and iron deficiencies re-emerging in urban Latin America? A survey of schoolchildren in Bogota, Colombia. Food Nutr Bull. 2009;30(2):103-11.
Maslova, E., Mora-Plazas, M., Forero, Y., López-Arana, S., Baylin, A., & Villamor, E. (2009). Are vitamin A and iron deficiencies re-emerging in urban Latin America? A survey of schoolchildren in Bogota, Colombia. Food and Nutrition Bulletin, 30(2), 103-11.
Maslova E, et al. Are Vitamin a and Iron Deficiencies Re-emerging in Urban Latin America? a Survey of Schoolchildren in Bogota, Colombia. Food Nutr Bull. 2009;30(2):103-11. PubMed PMID: 19689088.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Are vitamin A and iron deficiencies re-emerging in urban Latin America? A survey of schoolchildren in Bogota, Colombia. AU - Maslova,Ekaterina, AU - Mora-Plazas,Mercedes, AU - Forero,Yibby, AU - López-Arana,Sandra, AU - Baylin,Ana, AU - Villamor,Eduardo, PY - 2009/8/20/entrez PY - 2009/8/20/pubmed PY - 2009/9/12/medline SP - 103 EP - 11 JF - Food and nutrition bulletin JO - Food Nutr Bull VL - 30 IS - 2 N2 - BACKGROUND: In Latin America, the burden of vitamin A and iron deficiencies has been documented primarily in preschool-age children. There are few recent reports on the vitamin A and iron status of school-age children. OBJECTIVE: We aimed to determine the prevalence and predictors of vitamin A and iron deficiencies in Colombian schoolchildren. METHODS: We examined plasma retinol and ferritin concentrations in relation to socioeconomic and anthropometric factors in a representative sample of 2811 low- and middle-income children 5 to 12 years of age in Bogotá, Colombia. RESULTS: The prevalence rates of deficiencies of vitamin A (plasma retinol < 0.70 micromol/L) and iron (plasma ferritin <15 microg/L) were 14% and 3%, respectively. In multivariate analysis, plasma retinol concentrations were positively associated with child's age and household's socioeconomic stratum, whereas ferritin concentrations were positively related to child's age, number of home assets, and having a nonsingle mother. Ferritin concentrations were much lower among girls than boys in the 11- and 12-year-old age group, whereas there were only small positive differences between girls and boys in younger children (p for interaction < .0001). Both vitamin A and iron deficiencies were independently associated with lower z-scores for body-mass-index-for-age, after adjustment for sociodemographic factors and C-reactive protein concentrations. Neither vitamin A nor iron status was related to height-for-age. CONCLUSIONS: The prevalence rates of vitamin A and iron deficiencies among schoolchildren from Bogotd, Colombia, are not negligible. Both vitamin A and iron status are positively associated with socioeconomic status and anthropometric indices. The effect of improving vitamin A and iron status on physical growth and other functional outcomes needs to be further examined in this age group. SN - 0379-5721 UR - https://www.unboundmedicine.com/medline/citation/19689088/Are_vitamin_A_and_iron_deficiencies_re_emerging_in_urban_Latin_America_A_survey_of_schoolchildren_in_Bogota_Colombia_ L2 - http://journals.sagepub.com/doi/full/10.1177/156482650903000201?url_ver=Z39.88-2003&amp;rfr_id=ori:rid:crossref.org&amp;rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -