2.50
Hdl Handle:
http://hdl.handle.net/10755/165314
Category:
Abstract
Type:
Presentation
Title:
NEW CANCER-RELATED FATIGUE INSTRUMENT: PSYCHOMETRIC TESTING
Author(s):
Wu, Honrg-Shiuann; McSweeney, Maryellen; Wyrwich, Kathleen
Author Details:
Honrg-Shiuann Wu, PhD, RN, St. Louise University, St. Louis , Missouri, USA; Maryellen McSweeney, PhD; Kathleen Wyrwich, PhD
Abstract:
Cancer-related fatigue (CRF) is a highly prevalent, subjective experience of cancer patients and survivors. Effective assessment of CRF attributes from the patients perspective is essential. Researchers have tackled some of the persistent problems in the measurement of CRF such as including the patients perspective in the development and/or validation of CRF instruments and separating the effects of fatigue from its manifestations. This study determined the psychometric properties of a new CRF instrument, a specific measure of CRF symptoms developed from the patients perspective, for a breast cancer population. The premise of Pipers Integrated Fatigue Model, that subjective indicators are essential to assessing the fatigue experience, guided the study. Classical Test Theory, including error of measurement and the domain-sampling model, guided the psychometric analyses. 254 breast cancer chemotherapy outpatients, at various stages and on various chemotherapy regimens, of three cancer clinics in a metropolitan area participated in this study. Four instruments were completed in order: the newly developed CRF instrument, Schwartz Cancer Fatigue Scale (SCFS), Geriatric Depression Scale (GDS), and Cancer Related Fatigue Distress Scale (CRFDS). The psychometric properties, including construct and criterion-related validities and internal consistency reliability, were tested (n=82) then the measurement model was cross-validated (n=172) using structural equation modeling. Principal axis factoring gave a one-factor solution accounting for 59% variance. Alpha=0.95 for the 15-item scale. Convergent validity with the SCFS was 0.84; concurrent validity with the GDS was 0.61; and predictive validity with the CRFDS was 0.83. Confirmatory factor analysis (LISREL 8.54) confirmed the one-factor measurement model with nine items remaining. Nonsignificant Satorra-Bentler Scaled chi-square(27)=32.52, p=0.21, standardized RMR=0.032, NNFI=0.97, CFI=0.98, and IFI=0.98 indicated a good model fit with alpha=0.91 for the final 9-item scale. This newly developed CRF instrument provides quantitative information on fatigue symptom status to monitor the patients condition or treatment progress. The information can improve the communication between clinicians and patients, be incorporated into treatment decisions, and help better manage CRF.
Repository Posting Date:
27-Oct-2011
Date of Publication:
27-Oct-2011
Conference Date:
2005
Conference Name:
30th Annual Oncology Nursing Society Congress
Conference Host:
Oncology Nursing Society
Conference Location:
Orlando, Florida, USA
Sponsors:
Funding Sources: Funded by the ONS Foundation through an unrestricted grant from Ortho Biotech Products, L.P.
Note:
This is an abstract-only submission. If the author has submitted a full-text item based on this abstract, you may find it by browsing the Virginia Henderson Global Nursing e-Repository by author. If author contact information is available in this abstract, please feel free to contact him or her with your queries regarding this submission. Alternatively, please contact the conference host, journal, or publisher (according to the circumstance) for further details regarding this item. If a citation is listed in this record, the item has been published and is available via open-access avenues or a journal/database subscription. Contact your library for assistance in obtaining the as-published article.

Full metadata record

DC FieldValue Language
dc.type.categoryAbstracten_US
dc.typePresentationen_GB
dc.titleNEW CANCER-RELATED FATIGUE INSTRUMENT: PSYCHOMETRIC TESTINGen_GB
dc.contributor.authorWu, Honrg-Shiuannen_US
dc.contributor.authorMcSweeney, Maryellenen_US
dc.contributor.authorWyrwich, Kathleenen_US
dc.author.detailsHonrg-Shiuann Wu, PhD, RN, St. Louise University, St. Louis , Missouri, USA; Maryellen McSweeney, PhD; Kathleen Wyrwich, PhDen_US
dc.identifier.urihttp://hdl.handle.net/10755/165314-
dc.description.abstractCancer-related fatigue (CRF) is a highly prevalent, subjective experience of cancer patients and survivors. Effective assessment of CRF attributes from the patients perspective is essential. Researchers have tackled some of the persistent problems in the measurement of CRF such as including the patients perspective in the development and/or validation of CRF instruments and separating the effects of fatigue from its manifestations. This study determined the psychometric properties of a new CRF instrument, a specific measure of CRF symptoms developed from the patients perspective, for a breast cancer population. The premise of Pipers Integrated Fatigue Model, that subjective indicators are essential to assessing the fatigue experience, guided the study. Classical Test Theory, including error of measurement and the domain-sampling model, guided the psychometric analyses. 254 breast cancer chemotherapy outpatients, at various stages and on various chemotherapy regimens, of three cancer clinics in a metropolitan area participated in this study. Four instruments were completed in order: the newly developed CRF instrument, Schwartz Cancer Fatigue Scale (SCFS), Geriatric Depression Scale (GDS), and Cancer Related Fatigue Distress Scale (CRFDS). The psychometric properties, including construct and criterion-related validities and internal consistency reliability, were tested (n=82) then the measurement model was cross-validated (n=172) using structural equation modeling. Principal axis factoring gave a one-factor solution accounting for 59% variance. Alpha=0.95 for the 15-item scale. Convergent validity with the SCFS was 0.84; concurrent validity with the GDS was 0.61; and predictive validity with the CRFDS was 0.83. Confirmatory factor analysis (LISREL 8.54) confirmed the one-factor measurement model with nine items remaining. Nonsignificant Satorra-Bentler Scaled chi-square(27)=32.52, p=0.21, standardized RMR=0.032, NNFI=0.97, CFI=0.98, and IFI=0.98 indicated a good model fit with alpha=0.91 for the final 9-item scale. This newly developed CRF instrument provides quantitative information on fatigue symptom status to monitor the patients condition or treatment progress. The information can improve the communication between clinicians and patients, be incorporated into treatment decisions, and help better manage CRF.en_GB
dc.date.available2011-10-27T12:16:18Z-
dc.date.issued2011-10-27en_GB
dc.date.accessioned2011-10-27T12:16:18Z-
dc.conference.date2005en_US
dc.conference.name30th Annual Oncology Nursing Society Congressen_US
dc.conference.hostOncology Nursing Societyen_US
dc.conference.locationOrlando, Florida, USAen_US
dc.description.sponsorshipFunding Sources: Funded by the ONS Foundation through an unrestricted grant from Ortho Biotech Products, L.P.-
dc.description.noteThis is an abstract-only submission. If the author has submitted a full-text item based on this abstract, you may find it by browsing the Virginia Henderson Global Nursing e-Repository by author. If author contact information is available in this abstract, please feel free to contact him or her with your queries regarding this submission. Alternatively, please contact the conference host, journal, or publisher (according to the circumstance) for further details regarding this item. If a citation is listed in this record, the item has been published and is available via open-access avenues or a journal/database subscription. Contact your library for assistance in obtaining the as-published article.-
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