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Evaluation of a modified arthritis self-efficacy scale for an ankylosing spondylitis UK population
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Sandhu, J., Packham, Jonathan C., Healey, Emma L., Jordan, Kelvin, Garratt, Andrew M. and Haywood, Kirstie L. (2011) Evaluation of a modified arthritis self-efficacy scale for an ankylosing spondylitis UK population. Clinical and Experimental Rheumatology, Volume 29 (Number 2). pp. 223-230. ISSN 0392-856X.
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Official URL: http://www.clinexprheumatol.org/pubmed/find-pii.as...
Abstract
To evaluate an Ankylosing Spondylitis-specific Arthritis Self-Efficacy Scale (ASES-AS) United Kingdom (UK) secondary care population.
Methods
The ASES-AS is based on the 8-item ASES with minor alterations in phraseology. Patients from ten secondary care rheumatology centres across England were asked to complete a postal questionnaire concerning sociodemo graphic and clinical characteristics: Bath AS Functional Index (BASFI), Bath AS Disease Activity Index (BASDAI), numerical pain rating scale (NRS), Hospital Anxiety and Depression Scale (HADS), Short Form 36 (SF-36), Evaluation of AS Quality of Life questionnaire (EASi-QoL) and ASES-AS. Respondents received repeat questionnaires at 2 weeks and 6 months including health transition questions assessing change in AS-specific and general health. The ASES-AS was assessed for data quality, reliability, validity, and responsiveness.
Results
Response rate was 64% (n=612), 72% (n=438) were male, mean age 50.8yrs (SD 12.2 yrs.), mean disease duration 17.3 yrs (SD 11.7 yrs) and mean symptom duration 22.4 yrs (SD 12.4 yrs). Missing data for each item/total score range was 0.7%-3.1%. Item-total correlations range was 0.66 to 0.83. Cronbach's alpha was 0.93 and test-retest reliability (intraclass correlation coefficient) 0.77. A priori hypothesised associations between ASAS-AS and disease status measures were supported. Social variables potentially related to self-efficacy demonstrated evidence of convergent validity (employment p<0.001, educational level p<0.005). A Modified Standard Response Mean (MSRM) of 0.44 and 0.26 in AS-specific and general health respectively at 6 months indicates moderate responsiveness.
Conclusion
ASES-AS has good evidence supporting its application as an AS-specific self-efficacy measure in research including clinical trials at a group level.
Item Type: | Journal Article | ||||
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Alternative Title: | |||||
Subjects: | B Philosophy. Psychology. Religion > BF Psychology R Medicine > RC Internal medicine |
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Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School | ||||
Library of Congress Subject Headings (LCSH): | Self-efficacy, Ankylosing spondylitis -- Great Britain, Arthritis -- Patients | ||||
Journal or Publication Title: | Clinical and Experimental Rheumatology | ||||
Publisher: | Pacini Editore SpA | ||||
ISSN: | 0392-856X | ||||
Official Date: | 2011 | ||||
Dates: |
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Volume: | Volume 29 | ||||
Number: | Number 2 | ||||
Page Range: | pp. 223-230 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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