Birth Interval and its Association With Adverse Childhood Nutritional Outcomes Among Under-Five Children in Bangladesh: A Longitudinal Study.

Introduction: Short birth spacing is reported to have health consequences for both mother and child. This study aims to examine the effect of short birth interval on nutritional outcomes of under-five children in Bangladesh. Methods: We used data from the latest five rounds of successive Bangladesh Demographic and Health Surveys conducted during 2004 to 2017-18. Short birth interval is defined as birth spacing of < 24 months between two subsequent live births. The outcomes of interest are stunting and underweight. Both bivariate and multivariate statistical analyses were employed. Results of the multivariate analysis are shown by odds ratios (ORs) with 95% confidence intervals (CIs). Data were analyzed by Stata 15/IC. Results: A total of 16,100 under-five children of second and higher - order births were included for analysis. Of the children, 12% were born at a space of < 24 months, and 19% were born with a space of 24 - 35 months. The proportion of children with short birth interval was found decreasing over successive surveys. Results of the logistic regression analysis show that compared to the birth interval of 24 - 35 and 36 - 59 months, children born to women with birth interval < 24 months were significantly (P < 0.001) at higher risk of being stunted and underweight. Conclusions: Short birth interval has significant impact on childhood stunting and underweight. It remains a major factor resulting in childhood malnutrition in Bangladesh. Research to explore causal pathways and programs to lengthen space between inter-pregnancy should be intensified. [ABSTRACT FROM AUTHOR]