Introducción Validar las escalas es necesario para garantizar que son apropiadas para el objetivo para el que fueron creadas. Objetivo Validar la versión en castellano del Nursing Activities Score (NAS). Metodología Estudio observacional y prospectivo que incluye a 1.045 pacientes ingresados en una unidad médico-quirúrgica y una unidad de grandes quemados en 2006. La enfermera encargada del paciente valoró cargas de trabajo mediante el Nine Equivalent of Nursing Manpower use Score y el NAS. Para evaluar la consistencia interna de las mediciones del NAS se calcularon las correlaciones ítem-test, el alfa de Cronbach y alfa de Cronbach corregido, al omitir cada uno de los ítems. La fiabilidad intraobservador y la interobservador se valoraron con el coeficiente de correlación intraclase mediante la visualización de grabaciones y el Kappa (fiabilidad interobservador). Para analizar la validez interna se realizó un análisis factorial de componentes principales, y para la convergente el coeficiente de correlación de Spearman de los valores obtenidos de las escalas Nine Equivalent of Nursing Manpower use Score y NAS-castellano. Resultados Para la consistencia interna se analizaron 164 cuestionarios calcu...
Introduction Validating workload scores ensures that they are appropriate for the purpose for which they were developed. Objective To validate the Nursing Activities Score (NAS) Spanish version. Methodology Observational and prospective study. 1,045 patients who were admitted to a medical-surgical unit and a serious burns unit in 2006 were included. The nurse in charge assessed patient workloads by Nine Equivalent of Nursing Manpower use Score and NAS. To assess the internal consistency of the measurements of NAS, item-test correlations, Cronbach's α and Cronbach's α corrected by omitting each of the items were calculated. The intraobserver and interobserver reliability were assessed with the intraclass correlation coefficient by viewing recordings and Kappa (interobserver reliability) was estimated. For the analysis of internal validity, a factorial principal components analysis was performed. Convergent validity was assessed using the Spearman correlation coefficient values obtained from the Nine Equivalent of Nursing Manpower use Score and Spanish-NAS scales. Results For internal consistency, 164 questionnaires were analysed and a Cronbach's α of 0.373 was calculated. The intraclass correlatio...