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Developing a short form of the simple Rathus assertiveness schedule using a sample of adults with sickle cell disease
Coretta Jenerette1, Jane Dixon
1The University of North Carolina, Chapel Hill, NC 27599-7460, USA. coretta.jenerette@unc.edu
Purpose:
Ethnic and cultural norms influence an individual's assertiveness. In health care, assertiveness may play an important role in health outcomes, especially for predominantly minority populations, such as adults with sickle cell disease. Therefore, it is important to develop measures to accurately assess assertiveness. It is also important to reduce response burden of lengthy instruments while retaining instrument reliability and validity. The purpose of this article is to describe development of a shorter version of the Simple Rathus Assertiveness Schedule (SRAS).
Design:
Data from a cross-sectional descriptive study of adults with sickle cell disease were used to construct a short form of the SRAS, guided by stepwise regression analysis.
Results:
The 19-item Simple Rathus Assertiveness Scale-Short Form (SRAS-SF) had acceptable reliability (α = .81) and construct validity and was highly correlated with the SRAS (r = .98, p = .01).
Conclusions:
The SRAS-SF reduces response burden, while maintaining reliability and validity.
