Multiple sclerosis; Nurses; Psychometric methodsEsclerosis múltiple; Enfermeras; Métodos psicométricosEsclerosi múltiple; Infermeres; Mètodes psicomètricsExperiences of regret associated with caring for patients with multiple sclerosis (MS) can affect medical decisions. A non-interventional study was conducted to assess the dimensionality and item characteristics of a battery including the Regret Intensity Scale (RIS-10) and 15 items evaluating common situations experienced by nurses in MS care. A total of 97 nurses were included. The RIS-10 showed good internal reliability and a unidimensional structure according to Mokken analysis. All-item homogeneity coefficients exceeded 0.30, whereas scalability for the overall RIS-10 was 0.66, indicating a strong scale. This battery showed adequate psychometric properties to evaluate regret among MS nurses.The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was funded by the Medical Department of Roche Farma Spain (SL42129)
