Please use this identifier to cite or link to this item:
https://doi.org/10.21256/zhaw-2038
Publication type: | Article in scientific journal |
Type of review: | Peer review (publication) |
Title: | A 7-item version of the fatigue severity scale has better psychometric properties among HIV-infected adults : an application of a Rasch model |
Authors: | Lerdal, Anners Kottorp, Anders Gay, Caryl Aouizerat, Bradley E. Portillo, Carmen J. Lee, Kathryn A. |
DOI: | 10.21256/zhaw-2038 10.1007/s11136-011-9877-8 |
Published in: | Quality of Life Research |
Volume(Issue): | 20 |
Issue: | 9 |
Page(s): | 1447 |
Pages to: | 1456 |
Issue Date: | 2011 |
Publisher / Ed. Institution: | Springer |
ISSN: | 0962-9343 1573-2649 |
Language: | English |
Subjects: | HIV seropositivity; Psychometrics; Quality of life; Severity of Illness Index |
Subject (DDC): | 616: Internal medicine and diseases |
Abstract: | Purpose: To examine the psychometric properties of the 9-item Fatigue Severity Scale (FSS) using a Rasch model application. Methods: A convenience sample of HIV-infected adults was recruited, and a subset of the sample was assessed at 6-month intervals for 2 years. Socio-demographic, clinical, and symptom data were collected by self-report questionnaires. CD4 T-cell count and viral load measures were obtained from medical records. The Rasch analysis included 316 participants with 698 valid questionnaires. Results: FSS item 2 did not advanced monotonically, and items 1 and 2 did not show acceptable goodness-of-fit to the Rasch model. A reduced FSS 7-item version demonstrated acceptable goodness-of-fit and explained 61.2% of the total variance in the scale. In the FSS-7 item version, no uniform Differential Item Functioning was found in relation to time of evaluation or to any of the socio-demographic or clinical variables. Conclusion: This study demonstrated that the FSS-7 has better psychometric properties than the FSS-9 in this HIV sample and that responses to the different items are comparable over time and unrelated to socio-demographic and clinical variables. |
Further description: | Erworben im Rahmen der Schweizer Nationallizenzen (http://www.nationallizenzen.ch) |
URI: | https://digitalcollection.zhaw.ch/handle/11475/8392 |
Fulltext version: | Published version |
License (according to publishing contract): | Licence according to publishing contract |
Departement: | School of Health Sciences |
Organisational Unit: | Institute of Occupational Therapy (IER) |
Appears in collections: | Publikationen Gesundheit |
Files in This Item:
File | Description | Size | Format | |
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2011_Kottorp_A7-itemVersionOfTheFatigueSeve.pdf | 1.66 MB | Adobe PDF | View/Open |
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Lerdal, A., Kottorp, A., Gay, C., Aouizerat, B. E., Portillo, C. J., & Lee, K. A. (2011). A 7-item version of the fatigue severity scale has better psychometric properties among HIV-infected adults : an application of a Rasch model. Quality of Life Research, 20(9), 1447–1456. https://doi.org/10.21256/zhaw-2038
Lerdal, A. et al. (2011) ‘A 7-item version of the fatigue severity scale has better psychometric properties among HIV-infected adults : an application of a Rasch model’, Quality of Life Research, 20(9), pp. 1447–1456. Available at: https://doi.org/10.21256/zhaw-2038.
A. Lerdal, A. Kottorp, C. Gay, B. E. Aouizerat, C. J. Portillo, and K. A. Lee, “A 7-item version of the fatigue severity scale has better psychometric properties among HIV-infected adults : an application of a Rasch model,” Quality of Life Research, vol. 20, no. 9, pp. 1447–1456, 2011, doi: 10.21256/zhaw-2038.
LERDAL, Anners, Anders KOTTORP, Caryl GAY, Bradley E. AOUIZERAT, Carmen J. PORTILLO und Kathryn A. LEE, 2011. A 7-item version of the fatigue severity scale has better psychometric properties among HIV-infected adults : an application of a Rasch model. Quality of Life Research. 2011. Bd. 20, Nr. 9, S. 1447–1456. DOI 10.21256/zhaw-2038
Lerdal, Anners, Anders Kottorp, Caryl Gay, Bradley E. Aouizerat, Carmen J. Portillo, and Kathryn A. Lee. 2011. “A 7-Item Version of the Fatigue Severity Scale Has Better Psychometric Properties among HIV-Infected Adults : An Application of a Rasch Model.” Quality of Life Research 20 (9): 1447–56. https://doi.org/10.21256/zhaw-2038.
Lerdal, Anners, et al. “A 7-Item Version of the Fatigue Severity Scale Has Better Psychometric Properties among HIV-Infected Adults : An Application of a Rasch Model.” Quality of Life Research, vol. 20, no. 9, 2011, pp. 1447–56, https://doi.org/10.21256/zhaw-2038.
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