Infant Bottle-Feeding: A Prospective Study of Infant Physiology and Parental Report Metrics

Development, Psychometric Testing, and Reference Values of the Infant Eating Assessment Tool (InfantEAT)

BACKGROUND

Problematic feeding is common in infancy, particularly in infants with a history of premature birth or medical complexity. A concise, valid, and reliable measure of feeding that can be used across feeding methods is needed for clinical practice and research.

PURPOSE

The purpose of this study was to create an assessment tool to evaluate symptoms of problematic feeding in infants that can be used across all feeding methods (breastfeeding, bottle-feeding, and mixed feeding), then test its psychometric properties and establish reference values.

METHODS

Item response theory (IRT) was used to identify the most important items on the Neonatal Eating Assessment Tool (NeoEAT) related to symptoms of problematic feeding in infants (N = 1054) to create the Infant Eating Assessment Tool (InfantEAT). Reliability of the InfantEAT was tested using Cronbach's α and interitem correlations. Reference values of the InfantEAT were determined from a sample of healthy, full-term infants (n = 561). Percent agreement in identifying problematic feeding between the NeoEAT and the InfantEAT was calculated.

RESULTS

The InfantEAT is comprised of 31 items in 9 subscales. The InfantEAT has evidence of acceptable reliability (α = 0.88). There was 74% agreement between the NeoEAT and the InfantEAT, with the InfantEAT being more sensitive to identifying problematic feeding. References values are presented for infants 0 to 2, 2 to 4, 4 to 6, and 6 to 7 months.

IMPLICATIONS PRACTICE AND RESEARCH

The InfantEAT is a reliable and sensitive tool to evaluate symptoms of problematic feeding across feeding methods for infants younger than 7 months in both practice and research.