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

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


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.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Activities of Daily Living / psychology*
  • Aged
  • Aged, 80 and over
  • Analysis of Variance
  • Attitude to Health*
  • Case-Control Studies
  • Discriminant Analysis
  • Emotions
  • Factor Analysis, Statistical
  • Female
  • Health Status*
  • Humans
  • Linear Models
  • Longitudinal Studies
  • Male
  • Nursing Assessment / methods
  • Nursing Evaluation Research
  • Principal Component Analysis
  • Psychometrics
  • Pulmonary Disease, Chronic Obstructive / complications
  • Pulmonary Disease, Chronic Obstructive / physiopathology
  • Pulmonary Disease, Chronic Obstructive / psychology*
  • Pulmonary Disease, Chronic Obstructive / rehabilitation
  • Sensitivity and Specificity
  • Surveys and Questionnaires / standards*