“…(Netherlands, 2008); and Waterson et al (UK, 2010). In other studies, the lowest Cronbach alpha values were found in different components such as; Overall perception of patient safety (Blegen et al, 2009;Brajshori, Behrens, 2016); Organizational learning and continuous improvement (Hammer et al, 2011;Robida, 2013;Hedsköld et al, 2013;Vlayen et al, 2015); and Nonpunitive response to errors (Olsen, 2008). According to the AHRQ, the overall acceptable level of reliability for the Cronbachʼs alpha coefficient (α) is ≥ 0.60; in our research, the lower values for acceptable level of reliability were recorded for different components to those mentioned above: Nonpunitive response to errors (α = 0.585); Handoffs and transitions (α = 0.574); and for the new component identified by PCA in our study Critical situations on the unit (α = 0.578).…”