Association between Consumption of Cow's Milk and Iron Deficiency Anemia in Children: Are There Roles for Hepcidin-25/Ferroportin? A Case-Control Study

Prevalence and influencing factors with knowledge, attitude, and practice toward anemia among school-going adolescent girls in rural Bangladesh

BACKGROUND

Anemia is a major public health concern; however, research on anemia and its contributing variables is scarce. To address the gap, we investigated the prevalence and associated factors of anemia in school-aged adolescent girls in rural Bangladesh.

METHODS

We conducted a cross-sectional study in two secondary schools at Chandpur, Bangladesh, from January to April 2022. We randomly selected 422 adolescent girls based on prevalence rates from existing research to ensure reliable estimates and a robust study representation. We performed interviews with a semi-structured questionnaire after receiving ethical permission and written informed consent. In addition, physical examination and anthropometric measurements were done, followed by blood testing to identify anemia. Blood hemoglobin was measured using a spectrophotometric method, and quality control was ensured by validated results with control samples. Univariate with multiple logistic regression was employed for analysis to find the association between anemia and all other variables that were adjusted to control the potential effect of confounding variables.

RESULTS

The overall prevalence of anemia was 37.7% (mild- 33.8% and moderate- 3.9%). In the univariate analysis having a working mother (OR 3.84; 95% CI 1.31-11.26), undernutrition (OR 2.40; 95% CI 1.27-4.52), and irregular lunch consumption (OR 2.15; 95% CI 1.00-4.60) were associated with anemia. Conversely, being a user of a slab latrine (OR 0.61; 95% CI 0.40-0.93) and not weekly consumption of pure milk (OR 0.62; 95% CI 0.41-0.92) were negatively associated with anemia. In multivariate logistic regression analysis, associated factors for prevalent anemia were working mother [adjusted odds ratio (aOR) 7.65; 95% CI 1.97-29.50], slab latrine user (aOR 0.46; 95% CI 0.26-0.79), and irregular lunch consumption (aOR 2.92; 95% CI 1.21-7.03).

CONCLUSION

The prevalence of anemia among adolescent girls in rural Bangladesh remains high with undernutrition. Anemia is associated with working mothers, slab latrine users, and irregular lunch consumers within the studied population.' Thus, policymakers may promote school-based nutritional education and lunch programs with iron supplementation and improve sanitary facilities.