dc.description.abstract | Prevalence of exclusive breastfeeding program has inclined for the last three years, although prevalence of underweight infants has been rising at the same time. Social economical factor has become a substantial factor of family’s food reserve. Breast milk is a baby’s primary source of macronutrient which contains of carbohydrate, fat, and protein. The research objective was to analyze socio-economic factor on breast milk macronutrient content on the under weight infant aged 0-6 months. The research applied quantitative casecontrol which was administered in Kotakulon, Wringin and Ijen Public Health Center, Bondowoso Regency, Indonesia on June until August 2021. The research samples were 30 respondents (10 people as treatment group and 20 people as control group). Sample analysis of breast milk used luff school (carbohydrates of breast milk), babcock (fat of breast milk), and Kjedahl (protein of breast milk). Statistical analysis used multiple linier regressions with intervening variable. Most of underweight infants were from mothers with low educational background (elementary, secondary) and earned under the minimum regional wage, meanwhile those infants who had normal body mass had mothers with fair educational background (senior high school) and earned above minimum regional wage. There was significant macronutrient content of breast milk on the underweight infants aged 0-6 months (carbohydrate p = 0,045; fat p = 0,033; protein p = 0,005). Mother’s educational background and family’s income were the substantial factor of how breast milk macronutrient content affected on the below body mass of infants age 0-6 months. | en_US |