Objective To understand the incidence and risk factors of iron deficiency anemia of 6~8-month-old infants in Beijing,in order to provide data support for further development interventions of infant anemia. Methods A cohort study was conducted,and stratified cluster sampling was used to select newborns having their health care in the community healthcare centers,and then following up the infants till the first blood test.After data cleaning,the single factor and Logistic regression were used to explore the risk factors of iron deficiency anemia. Results A total of 2 243 children were involved in this study,and the incidence of iron deficiency anemia was 19.6%(446/2 243).Logistic regression showed that infants at the age of 6 to 8 months old whose parents' owning agricultural registered permanent residence(OR=1.568,95%CI:1.164~2.112),whose family had more than one child (OR=1.490,95%CI:1.150~1.929),whose father was younger than 25 years old when the child was born (OR=1.660,95%CI:1.119~2.464),whose mother did not use chalybeate before pregnancy (OR=1.440,95%CI:1.071~1.936),who was delivered in the second level hospital (OR=1.465,95%CI:1.112~1.931),who are low birth weight (OR=3.340,95%CI:1.398~7.980),who was a boy (OR=1.285,95%CI:1.025~1.611) and who was breastfed (OR=2.217,95%CI:1.584~3.102) have a higher risk to anemia. Conclusion 1)The incidence of iron deficiency anemia in 6 to 8-month-old infant is high in Beijing.2)The factors influencing the infant iron status and socio-economic factors can lead iron deficiency anemia in infants.
Key words
infant /
iron deficiency anemia /
risk factors
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