Development of the Followership Evaluation Instrument for Nurses: A Prospective Longitudinal Survey.

Background and Purpose: Maintaining a healthy work environment in nursing practice depends not only on the leader's skill but also on the nursing staff's followership. The study purpose is to develop a followership instrument for nurses. Methods: We developed a followership evaluation instrument using data from two surveys conducted in 2013 and 2014 and assessed its validity using a questionnaire with nurses in Japan. We tested the instrument's internal consistency reliability using exploratory factor analysis with Promax rotation and confirmatory factor analysis. Results: Cronbach's coefficient α (alpha) for the 13 instrument items was .911. The item-remainder correlation was .487-.734. Conclusions: The validity and reliability of the new followership instrument were established by confirming its internal consistency, test-retest reliability, and content, face, and construct validity.