Antecedentes: La lactancia materna exclusiva es esencial para los recién nacidos durante los primeros seis meses. En Perú, su tasa ha disminuido tras la pandemia. La autoeficacia, una variable modificable en la lactancia materna, se puede medir con la escala corta de autoeficacia en lactancia materna (BSES-SF), desarrollada en Canadá. Objetivos: Adaptar culturalmente la BSES-SF para Perú y evaluar su validez y confiabilidad. Material y métodos: Diseño de estudio, descriptivo de corte transversal. Primero, se adaptó las preguntas al lenguaje local. Segundo, 10 expertos evaluaron la adaptación mediante tres criterios. Tercero, se aplicó la escala adaptada a un grupo piloto de 30 puérperas. Finalmente, se evaluó la validez de contenido, validez de constructo y fiabilidad en una muestra de 248 puérperas. Resultados: La validez de contenido mostró un coeficiente de 0,93. La validez del constructo se verificó mediante análisis factorial confirmatorio, que sugirió una estructura unidimensional. Además, la prueba t-student (p < 0,000) indicó diferencias significativas entre grupos. La fiabilidad se evaluó con un alfa de Cronbach de 0,774 y coeficiente de correlación intraclase de 0,794. Conclusión: La adaptación de la escala BSES-SF para Perú mostró evidencia de validez y confiabilidad, por lo que puede considerarse una medida válida y fiable de la autoeficacia en lactancia materna en el Perú.
Background: Exclusive breastfeeding is the primary source of nutrition for every newborn during the first six months of life. In Peru, breastfeeding rates have declined following the pandemic. Self-efficacy plays a crucial role in breastfeeding and can be assessed using the Breastfeeding Self-Efficacy Short Scale (BSES-SF), originally developed in Canada. Objectives: This study aims to culturally adapt, validate, and establish the reliability of the BSES-SF scale. Material and methods: Study design, descriptive cross-sectional. First, the questions were adapted to the local language. Second, 10 experts evaluated the adaptation using three criteria. Third, the adapted scale was administered to a pilot group of 30 postpartum women. Finally, content validity, construct validity, and reliability were assessed in a sample of 248 postpartum women. Results: The content validity coefficient (CVC) obtained was 0.93. The construct validity was determined through confirmatory factor analysis, which demonstrated that the scale exhibits a unidimensional structure. Likewise, the t student test whose p value < 0.000 showed that there are significant differences between groups. Reliability analysis showed a Cronbach's alpha of 0.774 and intraclass correlation coefficient of 0.794. Conclusions: The findings indicate that the adapted BSES-SF scale demonstrates evidence of validity and reliability in measuring breastfeeding self-efficacy in Peru. Therefore, it can be considered a valid and reliable instrument for assessing breastfeeding self-efficacy in this population.
