Exploratory Factor Analysis of the Australian/English Version of the Diabetes Management Self-Efficacy Scale

2.50
Hdl Handle:
http://hdl.handle.net/10755/154340
Type:
Presentation
Title:
Exploratory Factor Analysis of the Australian/English Version of the Diabetes Management Self-Efficacy Scale
Abstract:
Exploratory Factor Analysis of the Australian/English Version of the Diabetes Management Self-Efficacy Scale
Conference Sponsor:Sigma Theta Tau International
Conference Year:2006
Author:McDowell, Jan, RN, PhD
P.I. Institution Name:Queensland University of Technology
Title:Senior Research Fellow
Co-Authors:Mary Courtney, RN, PhD; Helen Edwards, RN, PhD
The 20 item Australian/English version of the Diabetes Management Self-Efficacy Scale (DMSES) is a valid and reliable instrument tailored to measure self-efficacy towards managing diabetes-related self care within the Australian environment.  To date the tool has been regarded as a unidimensional scale. This paper presents results from exploratory factor analyses undertaken to determine if the instrument measures multiple aspects of self-efficacy in this context.   One hundred and eighty-four community-dwelling Australians with type 2 diabetes (53% female) were recruited to this cross-sectional study via advertisements in magazines, medical practices, and community health centres. Participants completed a mailed self-report questionnaire that included the DMSES. The sample was middle aged (M=63 years; SD = 10.5), retired (81%), and had mostly been diagnosed with diabetes for more than a year (74%). The data met assumptions for factor analysis and the sample size was adequate (KMO = 0.9).  Factors were extracted using Principal Component Analysis plus Varimax with Kaiser Normalisation. With eigenvalues set at greater than 1, the initial analysis identified four factors. However, all but four scale items loaded at 0.4 or above on the first factor, suggesting that the DMSES may be unidimensional. Subsequent analysis, during which the data were rotated, identified four disparate factors with items loading at 0.53 or above. Factor 1, comprising nine items related to ?food and diet?, explained 26.7% of the scale variance. Factor 2 contained five items associated with ?doing diabetes-related activities? e.g. examining feet (17.3% variance). Factor 3 included three items related to ?checking blood glucose level? (13.3% variance); and Factor 4 consisted of 3 items associated with ?taking medication and visiting the doctor? (10.2% variance). Outcomes indicate that this version of the DMSES contains four subscales that measure self-efficacy towards undertaking aspects of diabetes management. Confirmatory factor analysis is now required to validate these findings.
Repository Posting Date:
26-Oct-2011
Date of Publication:
17-Oct-2011
Sponsors:
Sigma Theta Tau International

Full metadata record

DC FieldValue Language
dc.typePresentationen_GB
dc.titleExploratory Factor Analysis of the Australian/English Version of the Diabetes Management Self-Efficacy Scaleen_GB
dc.identifier.urihttp://hdl.handle.net/10755/154340-
dc.description.abstract<table><tr><td colspan="2" class="item-title">Exploratory Factor Analysis of the Australian/English Version of the Diabetes Management Self-Efficacy Scale</td></tr><tr class="item-sponsor"><td class="label">Conference Sponsor:</td><td class="value">Sigma Theta Tau International</td></tr><tr class="item-year"><td class="label">Conference Year:</td><td class="value">2006</td></tr><tr class="item-author"><td class="label">Author:</td><td class="value">McDowell, Jan, RN, PhD</td></tr><tr class="item-institute"><td class="label">P.I. Institution Name:</td><td class="value">Queensland University of Technology</td></tr><tr class="item-author-title"><td class="label">Title:</td><td class="value">Senior Research Fellow</td></tr><tr class="item-email"><td class="label">Email:</td><td class="value">j.mcdowell@qut.edu.au</td></tr><tr class="item-co-authors"><td class="label">Co-Authors:</td><td class="value">Mary Courtney, RN, PhD; Helen Edwards, RN, PhD</td></tr><tr><td colspan="2" class="item-abstract">The 20 item Australian/English version of the Diabetes Management Self-Efficacy Scale (DMSES) is a valid and reliable instrument tailored to measure self-efficacy towards managing diabetes-related self care within the Australian environment.&nbsp; To date the tool has been regarded as a unidimensional scale. This paper presents results from exploratory factor analyses undertaken to determine if the instrument measures multiple aspects of self-efficacy in this context. &nbsp;&nbsp;One hundred and eighty-four community-dwelling Australians with type 2 diabetes (53% female) were recruited to this cross-sectional study via advertisements in magazines, medical practices, and community health centres. Participants completed a mailed self-report questionnaire that included the DMSES. The sample was middle aged (M=63 years; SD = 10.5), retired (81%), and had mostly been diagnosed with diabetes for more than a year (74%). The data met assumptions for factor analysis and the sample size was adequate (KMO = 0.9).&nbsp; Factors were extracted using Principal Component Analysis plus Varimax with Kaiser Normalisation. With eigenvalues set at greater than 1, the initial analysis identified four factors. However, all but four scale items loaded at 0.4 or above on the first factor, suggesting that the DMSES may be unidimensional. Subsequent analysis, during which the data were rotated, identified four disparate factors with items loading at 0.53 or above. Factor 1, comprising nine items related to ?food and diet?, explained 26.7% of the scale variance. Factor 2 contained five items associated with ?doing diabetes-related activities? e.g. examining feet (17.3% variance). Factor 3 included three items related to ?checking blood glucose level? (13.3% variance); and Factor 4 consisted of 3 items associated with ?taking medication and visiting the doctor? (10.2% variance). Outcomes indicate that this version of the DMSES contains four subscales that measure self-efficacy towards undertaking aspects of diabetes management. Confirmatory factor analysis is now required to validate these findings.</td></tr></table>en_GB
dc.date.available2011-10-26T12:55:26Z-
dc.date.issued2011-10-17en_GB
dc.date.accessioned2011-10-26T12:55:26Z-
dc.description.sponsorshipSigma Theta Tau Internationalen_GB
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