Development and validation of Nurse Managers' Empowering Behavioral Scale for staff nurses.

The scale items resulted in five subscales comprising of 48 items altogether. The goodness-of-fit indices for confirmatory factor analysis were CFI = 0.903 and RMSEA = 0.076. The correlation with external criteria for criterion-related validity was near the expected standard. Further, Cronbach's α coefficient was 0.95-0.97 for each subscale and 0.99 for the overall scale. The reliability and validity of the developed NMEB-SN were verified for staff nurses in Japan.