Interactive Breastfeeding Scale: reliability assessment

Abstract Objective to assess the Interactive Breastfeeding Scale reliability. Method a methodological study that followed the third stage of Pasquali’s method for the elaboration of scales, carried out with 216 postpartum women at a university hospital in southeastern Brazil. To assess reliability, percentage of agreement (pa) above 80%, the weighted Kappa (Kp), Gwet’s second-order agreement coefficient (AC2) and Cronbach’s alpha were used. Results the percentage of agreement was 83.33%; the overall Cronbach’s alpha value was 0.67; the AC2 coefficient with quadratic and linear weights obtained near-perfect reliability. Conclusion and implication for practice the Interactive Breastfeeding Scale reliability assessment was high, and it was confirmed by the results that ensure instrument quality in the population studied, proving to be a reliable and valid instrument to assess factors that interfere in the mother-child interaction while breastfeeding.