SciELO - Scientific Electronic Library Online

 
vol.25 issue1Detection and differentiation of Entamoeba histolytica and Entamoeba dispar by polymerase chain reaction in a community in Zulia State, VenezuelaUsers' and community leaders' perceptions of their capacity to influence the quality of health care: case studies of Colombia and Brazil author indexsubject indexarticles search
Home Page  

Cadernos de Saúde Pública

Print version ISSN 0102-311X

Abstract

DAL PIZZOL, Tatiane da Silva; GIUGLIANI, Elsa Regina Justo  and  MENGUE, Sotero Serrate. Association between iron supplementation during pregnancy and prematurity, low birth weight, and very low birth weight. Cad. Saúde Pública [online]. 2009, vol.25, n.1, pp. 160-168. ISSN 0102-311X.  http://dx.doi.org/10.1590/S0102-311X2009000100017.

The objective was to evaluate the association between prophylactic iron supplementation and prematurity and low birth weight. Pregnant women 20 years and older with 21 to 28 weeks of gestational age were enrolled consecutively in prenatal services in the Unified National Health System in six Brazilian State capitals between 1991 and 1995. Socio-demographic data and information on iron supplementation up until the 28th gestational week were obtained by means of an interview. Outcomes and other variables were collected from medical records. Anemia was present in 31.3% of the 3,865 women. Among anemic women (hemoglobin < 11.0g/dL), 29.8% were taking iron supplements, as compared to 16.7% among non-anemic women (hemoglobin > 11.0g/dL). After adjusting for potential confounders, iron was not associated with prematurity (OR = 0.88; 95%CI: 0.73-1.07), low birth weight (OR = 0.99; 95%CI: 0.75-1.31), or very low birth weight (OR = 0.58; 95%CI: 0.29-1.13). The results suggest that iron supplementation up to the 28th gestational week does not reduce the risk of prematurity, low birth weight, or very low birth weight.

Keywords : Iron Salts; Pregnancy; Premature Infant; Birth Weight.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese