PURPOSE: To explore the role of paternal support in EBF failure among 3-month-old infants.

METHODS: This sequential mixed-methods study, part of an ongoing cohort study in West Java in early 2022, included 225 infants. The parents of 3-month-old infants were interviewed. Paternal support was assessed using a 15-point validated questionnaire for a total score of 15-60 points. Multivariate binary regression was used to determine adjusted odds ratios (aORs). The qualitative exploration was based on in-depth interviews (IDIs) and forum group discussions (FGDs) following the quantitative survey.

RESULTS: Of the 225 infants, 52.2% were no longer EBF. High paternal support (greater than the mean score) of breastfeeding was determined in 52.9% of cases (mean± standard deviation, 38.7±6.7 for the overall population vs. 37.5±6.3 and 40.2±6.8 for infants who were and were not EBF at 3 months of age, respectively). Low paternal support was associated with an increased EBF failure rate (aOR, 2.84; 95% confidence interval [CI], 1.46-5.54). Other variables that remained as predictors in the final model were a low birth rate (aOR, 7.35; 95% CI, 1.73-31.20), negative maternal attitude (aOR, 3.31; 95% CI, 1.63-6.75), lower self-efficacy (aOR, 4.82; 95% CI, 2.43-9.57), and lower maternal education level (aOR, 2.87; 95% CI, 1.03- 8.03). The IDIs and FGD observed the importance of the father's support of the mother and EBF. The qualitative exploration revealed a lack of knowledge about EBF as a parental support barrier.