Testing the Reliability and Validity of the Health-Related Quality of Life Measures for Stroke Survivors

2.50
Hdl Handle:
http://hdl.handle.net/10755/163222
Category:
Abstract
Type:
Presentation
Title:
Testing the Reliability and Validity of the Health-Related Quality of Life Measures for Stroke Survivors
Author(s):
Nahm, Eun-Shim; Resnick, Barbara; Shaughnessy, Marianne; Michael, Kathleen; Kopunek, Sue
Author Details:
Eun-Shim Nahm, PhD, RN, Assistant Professor, University of Maryland, Organizational Systems and Adult Health, Baltimore, Maryland, USA, email: enahm@son.umaryland.edu; Barbara Resnick, PhD, CRNP FAAN; Marianne Shaughnessy, Ph.D., CRNP; Kathleen Michael, PhD, RN, CRRN; Sue Kopunek, BSN, RN
Abstract:
Purpose: The aims of this study were (1) to examine the psychometric aspects of the Health-related quality of life (HRQoL) measures included in two stroke exercise intervention studies (the SF-12, Stroke Impact Scale [SIS], and Visual Analog Scale [VAS]); and (2) to explore the most reliable and valid measure using a second-order confirmatory factor analysis measurement model. (HRQoL as a second-order construct and general, stroke-specific, and global HRQoL as first order constructs). Theoretical Framework: Health-related quality of life has become an important outcome in intervention studies for stroke survivors and has been assessed using various measures. Methods (Design, Sample, Setting, Measures, Analysis): This single group descriptive study included the baseline data of 164 adults (mean age: 63) with mild stroke. Reliability testing was conducted estimating the internal consistency and stability and calculating R2 employing Structural Equation Modeling. Validity of the measures was assessed using structural validity. Results: The VAS, SF-12 (the MCS, PCS), and SIS (8 subscales) were internally consistent (alpha: .70 - .87) and stable (ICC: .75 - .89). Most R2 values of the SF-12 and SIS were less than .5. Validity coefficients for most items were within an acceptable range (? > .5). The validity of the VAS was evidenced by significant correlations with the SF-12 and SIS. From testing the second-order HRQoL measurement model, the R2 values for the SIS, MCS, PCS, and VAS were .93, .81, .65, and .26, respectively. The validity coefficients were .97, 90, .81, and .51. Conclusions and Implications: Using traditional measurement theories, all three HRQoL measures, the SIS, SF-12, and VAS, were reliable and valid. Low R2 values seem to be associated with possible measurement errors. The findings from testing the second-order HRQoL measurement model, however, suggest that the SIS (stroke-specific measure) was the most reliable and valid measure. The model, however, must be replicated.
Repository Posting Date:
27-Oct-2011
Date of Publication:
27-Oct-2011
Conference Date:
2006
Conference Name:
18th Annual Scientific Sessions
Conference Host:
Eastern Nursing Research Society
Conference Location:
Cherry Hill, New Jersey
Description:
�New Momentum for Nursing Research: Multidisciplinary Alliances�, held on April 20th -22nd at the Hilton in Cherry Hill, New Jersey
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.titleTesting the Reliability and Validity of the Health-Related Quality of Life Measures for Stroke Survivorsen_GB
dc.contributor.authorNahm, Eun-Shimen_US
dc.contributor.authorResnick, Barbaraen_US
dc.contributor.authorShaughnessy, Marianneen_US
dc.contributor.authorMichael, Kathleenen_US
dc.contributor.authorKopunek, Sueen_US
dc.author.detailsEun-Shim Nahm, PhD, RN, Assistant Professor, University of Maryland, Organizational Systems and Adult Health, Baltimore, Maryland, USA, email: enahm@son.umaryland.edu; Barbara Resnick, PhD, CRNP FAAN; Marianne Shaughnessy, Ph.D., CRNP; Kathleen Michael, PhD, RN, CRRN; Sue Kopunek, BSN, RNen_US
dc.identifier.urihttp://hdl.handle.net/10755/163222-
dc.description.abstractPurpose: The aims of this study were (1) to examine the psychometric aspects of the Health-related quality of life (HRQoL) measures included in two stroke exercise intervention studies (the SF-12, Stroke Impact Scale [SIS], and Visual Analog Scale [VAS]); and (2) to explore the most reliable and valid measure using a second-order confirmatory factor analysis measurement model. (HRQoL as a second-order construct and general, stroke-specific, and global HRQoL as first order constructs). Theoretical Framework: Health-related quality of life has become an important outcome in intervention studies for stroke survivors and has been assessed using various measures. Methods (Design, Sample, Setting, Measures, Analysis): This single group descriptive study included the baseline data of 164 adults (mean age: 63) with mild stroke. Reliability testing was conducted estimating the internal consistency and stability and calculating R2 employing Structural Equation Modeling. Validity of the measures was assessed using structural validity. Results: The VAS, SF-12 (the MCS, PCS), and SIS (8 subscales) were internally consistent (alpha: .70 - .87) and stable (ICC: .75 - .89). Most R2 values of the SF-12 and SIS were less than .5. Validity coefficients for most items were within an acceptable range (? > .5). The validity of the VAS was evidenced by significant correlations with the SF-12 and SIS. From testing the second-order HRQoL measurement model, the R2 values for the SIS, MCS, PCS, and VAS were .93, .81, .65, and .26, respectively. The validity coefficients were .97, 90, .81, and .51. Conclusions and Implications: Using traditional measurement theories, all three HRQoL measures, the SIS, SF-12, and VAS, were reliable and valid. Low R2 values seem to be associated with possible measurement errors. The findings from testing the second-order HRQoL measurement model, however, suggest that the SIS (stroke-specific measure) was the most reliable and valid measure. The model, however, must be replicated.en_GB
dc.date.available2011-10-27T11:03:35Z-
dc.date.issued2011-10-27en_GB
dc.date.accessioned2011-10-27T11:03:35Z-
dc.conference.date2006en_US
dc.conference.name18th Annual Scientific Sessionsen_US
dc.conference.hostEastern Nursing Research Societyen_US
dc.conference.locationCherry Hill, New Jerseyen_US
dc.description�New Momentum for Nursing Research: Multidisciplinary Alliances�, held on April 20th -22nd at the Hilton in Cherry Hill, New Jerseyen_US
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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