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Res Nurs Health. 2010 Dec;33(6):477-85. doi: 10.1002/nur.20403. Epub 2010 Oct 18.

The development and psychometric analysis of the short-form Pulmonary Functional Status Scale (PFSS-11).

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  • 1School of Nursing, Robert C Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506-9600, USA.


This article describes the development and psychometric evaluation of the short-form Pulmonary Functional Status Scale (PFSS-11©) derived from the previously validated 35-item PFSS, using data from 179 subjects (120 Chronic Obstructive Pulmonary Disease [COPD]/59 normative, non-COPD). Items were extracted based on item-response distribution and commonality >.60. Factor analysis yielded a three-factor solution, accounting for 65.6% of total variance. Construct validity was supported by PFSS-11© scores for COPD versus norms (p < .001). The PFSS-11© was robustly associated with the PFSS-35 (r = .93), accounting for 88% of variance in the longer version. Internal consistency was satisfactory and significant response to treatment was shown by score changes pre/post-rehabilitation. The PFSS-11© has solid psychometric properties useful in research and clinical practice, similar to the PFSS-35.

Copyright © 2010 Wiley Periodicals, Inc.

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