Impact of social determinants on the duration of exclusive and total breastfeeding during the first year of life

Abstract

Introduction: Social determinants are associated with duration of Breastfeeding (BF).

Objetive: To evaluate the impact of social determinants and biological variables that modulate the duration of exclusive and total BF in a cohort of infants under 1 year of age.

Methods: Observational, prospective and analytical study. Secondary data analysis based on the study Chilean Infant Nutrition Study Cohort. Infants under 4 months of age, term newborns, birth weight 2500 to 4500 gr and normal growth were admitted. Social determinants, biological variables of the mother and type of feeding (BF or milk formulas) of infants at 6, 9 and 12 months were analyzed. The information was collected by questionnaire.

The percentage of maternal fat was evaluated with bioimpedanciometry. Bivariate analysis (X2) was performed between the groups with and without BF. The association between duration of BF and social determinants was evaluated by logistic regression at 6, 9 and 12 months.

Results: Observational, prospective and analytical study. Secondary data analysis based on the study Chilean Infant Nutrition Study Cohort. Infants under 4 months of age, term newborns, birth weight 2500 to 4500 gr and normal growth were admitted. Social determinants, biological variables of the mother and type of feeding (BF or milk formulas) of infants at 6, 9 and 12 months were analyzed. The information was collected by questionnaire. The percentage of maternal fat was evaluated with bioimpedanciometry. Bivariate analysis (X2) was performed between the groups with and without BF. The association between duration of BF and social determinants was evaluated by logistic regression at 6, 9 and 12 months.

Conclusions: The socioeconomic level and age of the infant when the mother returns to work are the variables most strongly associated with the duration of BF.