Validation of a scale to measure fathers' confidence in supporting breastfeeding.

Objective: The objective of this study was to describe the process of cross-cultural adaptation of the Breastfeeding Self-Efficacy Scale-Short Form among Fathers for use in Brazil.

Methods: This is a cross-cultural adaptation study that began with the translation from the original English into Portuguese, followed by back translation. A committee of experts evaluated the semantic, idiomatic, experiential, and conceptual equivalences.