Parallel and Factor Analysis for Delimiting Items in a Three-Dimensional Construct of Clarity for Nurses
Nelson, John W.
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<p><strong>Introduction:</strong> <em>Clarity of Self, Role and System </em>is a newly developed tool that measures clarity for patient care providers as it relates to self, role and system. The instrument is based on work by Jayne Felgen and Mary Koloroutis. The “Clarity of Self” subscale was derived from another 40-item instrument that was established by Campbell et al. (1996). The other two subscales, “Clarity of Role” and “Clarity of System,” were co-created by the authors. <strong> Aims/Objectives: </strong>The purpose of this study is to decrease the number of items that respondents are required to respond to, while maintaining the validity of the construct. <strong>Materials & Methods: </strong>Parallel analysis and factor analysis were performed by Healthcare Environment using SPSS software 22.0 and Brian O-Connor’s SPSS syntax. <strong>Results/Discussion: </strong>Four items were removed from the original 29-item survey, resulting in a new 25 item instrument. It was assumed that more items would be identified as candidates for deletion. However, extensive study of the factor structure revealed this not to be possible. Rather, several items for each dimension of clarity were required to have a valid measure of clarity of self, role and system. Although the authors were disappointed that more items could not be eliminated, this study did provide rigorous analysis for discussion of the results. Most helpful was a discussion of the adequacy of this instrument to measure clarity as it was originally articulated by Felgen and Koloroutis. <strong>Conclusion: </strong>This item reduction study did not completely provide its intent, but it did reveal that a re-specification of the measure of clarity is warranted. Items need to be added for both “Clarity of Role” and “Clarity of System.” Additionally, a new subscale for measuring clarity of self will need to be developed to more precisely measure the theory of clarity as proposed by Felgen and Koloroutis.</p>