The development and psychometric analysis of the short-form Pulmonary Functional Status Scale (PFSS-11).
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.
Chen
Yea-Jyh
YJ
School of Nursing, Robert C Byrd Health Sciences Center, West Virginia University, Morgantown, WV 26506-9600, USA.
Narsavage
Georgia L
GL
Culp
Stacey L
SL
Weaver
Terri E
TE
D000203:Activities of Daily Living / Q000523:psychology*; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D001294:Attitude to Health; D016022:Case-Control Studies; D016002:Discriminant Analysis; D004644:Emotions; D005163:Factor Analysis, Statistical; D005260:Female; D006304:Health Status; D006801:Humans; D016014:Linear Models; D008137:Longitudinal Studies; D008297:Male; D009730:Nursing Assessment / Q000379:methods; D015403:Nursing Evaluation Research; D025341:Principal Component Analysis; D011594:Psychometrics; D029424:Pulmonary Disease, Chronic Obstructive / Q000150:complications / Q000503:physiopathology / Q000523:psychology* / Q000534:rehabilitation; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires / Q000592:standards*