Data for: REBEn 2022-0497: Cross-cultural adaptation of breastfeeding self-efficacy scale short form (BSES-SF) modified for preterm mothers in Brazil

The aim of the study was to carry out a cross-cultural adaptation of the Breastfeeding Self-Efficacy Scale-Short Form (BSES-SF) for mothers of ill and/or preterm infants among Portuguese-speaking mothers in Brazil. A methodological study was completed including translation of the tool; synthesis of translations; review by experts; synthesis; reassessment of experts; back-translation; pre-test; and validation of the content. Results: Following translation synthesis by experts, minor modifications were made. 18 women were recruited and completed the questionnaires; the pre-test site was a tertiary hospital located in the north of the State of Paraná. In the adaptation, the study verified the equivalences: semantic (85%), idiom (89%), cultural (86%), and conceptual (94%). The content validation coefficient (CVC) of the scale was 0.93 for clarity and understanding; 0.89 for practical relevance; 0.92 for relevance; and the average overall CVC was 0.91.The scale translated and adapted to the Brazilian Portuguese language maintained the equivalences and confirmed content validity.