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Reliability and validity of the Swedish version of the Self-Efficacy for Rehabilitation outcome scale in persons with knee osteoarthritis

Liebenhagen Andersson, Elke and Brogårdh, Christina LU (2014) In European Journal of Physiotherapy 16(1). p.25-32
Abstract

Objective: To examine reliability and validity of the Swedish version of the Self-Efficacy for Rehabilitation (SER) outcome scale. Methods: One-hundred and ninety-eight inpatients (mean age 69 years) who underwent a primary total knee arthroplasty (TKA) due to knee osteoarthritis participated. They responded pre- and postoperatively to the SER outcome scale, and preoperatively to the Hospital Anxiety and Depression Scale (HAD) and the Knee Injury and Osteoarthritis Outcome Score (KOOS). Relative and absolute reliability were assessed. Internal consistency reliability was analysed with the Cronbach's alpha (α), and test-retest reliability with the intraclass correlation coefficient (ICC 2.1) and standard error of measurement (SEM%).... (More)

Objective: To examine reliability and validity of the Swedish version of the Self-Efficacy for Rehabilitation (SER) outcome scale. Methods: One-hundred and ninety-eight inpatients (mean age 69 years) who underwent a primary total knee arthroplasty (TKA) due to knee osteoarthritis participated. They responded pre- and postoperatively to the SER outcome scale, and preoperatively to the Hospital Anxiety and Depression Scale (HAD) and the Knee Injury and Osteoarthritis Outcome Score (KOOS). Relative and absolute reliability were assessed. Internal consistency reliability was analysed with the Cronbach's alpha (α), and test-retest reliability with the intraclass correlation coefficient (ICC 2.1) and standard error of measurement (SEM%). Construct validity was analysed with explorative principal component analysis (PCA) and convergent validity with the Spearman's rang correlation test (rs). Results: For the SER outcome scale, the Cronbach's α was 0.97. The mean total score was 101.1 points on the 14th postoperative day and 101.4 points on the 21st postoperative day, with no systematic bias (p = 0.91) between the tests. The ICC was 0.78 and SEM% was 10%. The PCA explained 84% of total variance for two components. The correlation between SER and HAD was rs = - 0.23 (p = 0.002), and between SER and KOOS's five dimensions rs = - 0.02 to 0.15 (ns). Conclusion: The Swedish version of the SER outcome scale can be considered reliable and valid for assessing self-efficacy in patients with knee osteoarthritis. Increased self-efficacy may help the patients to choose appropriate coping strategies when performing physical activities after the operation. © 2014 Informa Healthcare.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diagnostic self evaluation, Rehabilitation, Self-efficacy, Total knee replacement
in
European Journal of Physiotherapy
volume
16
issue
1
pages
8 pages
publisher
Informa Healthcare
external identifiers
  • Scopus:84896710346
ISSN
2167-9169
DOI
10.3109/21679169.2013.865261
language
English
LU publication?
yes
id
7e3e9098-aa16-459e-bdf3-f9fcbd20e442
date added to LUP
2016-04-08 08:18:15
date last changed
2016-07-07 14:37:09
@misc{7e3e9098-aa16-459e-bdf3-f9fcbd20e442,
  abstract     = {<p>Objective: To examine reliability and validity of the Swedish version of the Self-Efficacy for Rehabilitation (SER) outcome scale. Methods: One-hundred and ninety-eight inpatients (mean age 69 years) who underwent a primary total knee arthroplasty (TKA) due to knee osteoarthritis participated. They responded pre- and postoperatively to the SER outcome scale, and preoperatively to the Hospital Anxiety and Depression Scale (HAD) and the Knee Injury and Osteoarthritis Outcome Score (KOOS). Relative and absolute reliability were assessed. Internal consistency reliability was analysed with the Cronbach's alpha (α), and test-retest reliability with the intraclass correlation coefficient (ICC 2.1) and standard error of measurement (SEM%). Construct validity was analysed with explorative principal component analysis (PCA) and convergent validity with the Spearman's rang correlation test (rs). Results: For the SER outcome scale, the Cronbach's α was 0.97. The mean total score was 101.1 points on the 14th postoperative day and 101.4 points on the 21st postoperative day, with no systematic bias (p = 0.91) between the tests. The ICC was 0.78 and SEM% was 10%. The PCA explained 84% of total variance for two components. The correlation between SER and HAD was rs = - 0.23 (p = 0.002), and between SER and KOOS's five dimensions rs = - 0.02 to 0.15 (ns). Conclusion: The Swedish version of the SER outcome scale can be considered reliable and valid for assessing self-efficacy in patients with knee osteoarthritis. Increased self-efficacy may help the patients to choose appropriate coping strategies when performing physical activities after the operation. © 2014 Informa Healthcare.</p>},
  author       = {Liebenhagen Andersson, Elke and Brogårdh, Christina},
  issn         = {2167-9169},
  keyword      = {Diagnostic self evaluation,Rehabilitation,Self-efficacy,Total knee replacement},
  language     = {eng},
  number       = {1},
  pages        = {25--32},
  publisher    = {ARRAY(0x8703f40)},
  series       = {European Journal of Physiotherapy},
  title        = {Reliability and validity of the Swedish version of the Self-Efficacy for Rehabilitation outcome scale in persons with knee osteoarthritis},
  url          = {http://dx.doi.org/10.3109/21679169.2013.865261},
  volume       = {16},
  year         = {2014},
}