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- Title
The adaptation of a Danish version of the Pain Self- Efficacy Questionnaire: reliability and construct validity in a population of patients with fibromyalgia in Denmark.
- Authors
Rasmussen, Marianne U.; Rydahl‐Hansen, Susan; Amris, Kirstine; Danneskiold Samsøe, Bente; Mortensen, Erik L.
- Abstract
The aim of this study was to translate, culturally adapt and evaluate the psychometric properties of the Pain Self- Efficacy Questionnaire ( PSEQ) in a population of patients with fibromyalgia in Denmark. The study sample included 102 patients diagnosed with fibromyalgia referred to a specialist clinic. The PSEQ was translated and adapted to a Danish setting using a standard stepw-ise forward-backward translation procedure, followed by initial testing and focus group interview. Reliability was examined by analysing internal consistency and test-retest agreement. Construct validity was exami-ned by investigating dimensionality, targeting, local independence, category functioning and differential item functioning ( DIF). Reliability was high: Cronbach's alpha 0.88, test-retest correlation 0.93, intraclass correlation coefficient ( ICC) 0.89 and item-total correlations 0.44-0.70. Factor analyses and item response ( IRT) models indicated unidimensionality, and the PSEQ- DK was well targeted to the sample. High interitem correlation was observed between two items, indicating local dependence, and item misfit and DIF were observed for a few items. However, the overall fit of the scale to a single-factor model and IRT models supported acceptable construct validity. The PSEQ- DK showed acceptable psychometric properties and can therefore represent a reliable and valid measure for evaluating self-efficacy in patients with fibromyalgia in Denmark.
- Subjects
DENMARK; PSYCHOLOGICAL adaptation; CHRONIC pain; STATISTICAL correlation; TEST validity; EXPERIMENTAL design; FACTOR analysis; FIBROMYALGIA; FOCUS groups; RESEARCH methodology; QUESTIONNAIRES; REHABILITATION centers; RESEARCH evaluation; RESEARCH funding; SCALE analysis (Psychology); SELF-efficacy; SELF-evaluation; STATISTICS; T-test (Statistics); DATA analysis; ACTIVITIES of daily living; SOCIOECONOMIC factors; STATISTICAL reliability; MULTITRAIT multimethod techniques; RESEARCH methodology evaluation; DESCRIPTIVE statistics; MANN Whitney U Test; INTRACLASS correlation
- Publication
Scandinavian Journal of Caring Sciences, 2016, Vol 30, Issue 1, p202
- ISSN
0283-9318
- Publication type
Article
- DOI
10.1111/scs.12232