The Importance of Socioeconomic Factors Associated with Maternal Nutrition Knowledge and Undernutrition Among Children Under Five

Background: Socioeconomic factors may influence maternal nutrition knowledge (MNK), which directly affects the nutritional status of children under five. This study aims to explore the importance of socioeconomic factors associated with MNK and nutritional status. Methods: This cross-sectional study focused on mothers of children aged 36–59 months (n = 657). A structured questionnaire was employed to collect data on socioeconomic factors. Anthropometric measurements were taken to assess nutritional status. The Boruta algorithm, implemented using R Studio version R.4.5.1, was used to identify the most important socioeconomic factors associated with MNK and nutrition status. Results: The analysis revealed that socioeconomic status (SES) emerged as an important factor associated with MNK and nutrition status, particularly stunting and wasting. However, SES was not confirmed as an important factor associated with underweight. This study uncovered a bidirectional relationship between child nutrition outcomes; underweight was found to be an important factor related to stunting and wasting, whereas stunting and wasting were important factors for underweight. Furthermore, infant and young child feeding (IYCF) indicators, such as weaning practices and exclusive breastfeeding (BF), were found to be important factors for stunting and wasting. Conclusions: The interlinkage among forms of undernutrition, where each nutritional outcome is related to other outcomes, underscores the importance of comprehensively addressing child undernutrition, rather than focusing on single outcomes independently. Moreover, the association between SES and MNK, wasting, and stunting supports approaches based on holistic and multi-sectoral strategies to reduce poverty by WASH programs, promote IYCF practices, and improve healthcare access by providing health insurance coverage.