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January 28, 2015Acta Neurologica Scandinavica

Psychometric properties of the General Self-Efficacy Scale in Parkinson's disease

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Authors

MNMaria H NilssonPHPeter HagellSISusanne Iwarsson

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Overview

Randomized trial investigates self-efficacy measurement in Parkinson's disease, suggesting strong validity and reliability.

Key Points

  • The study investigates the psychometric properties of the General Self-Efficacy Scale (GSE) in individuals with Parkinson's disease.
  • Data from two projects including participants diagnosed with Parkinson's disease for at least 1 year were analyzed, yielding a combined total sample of N=346.
  • Participants completed a self-administered survey by mail, with additional clinical assessments available for Sample 1.
  • Test-retest reliability was examined alongside various psychometric evaluations including item-total correlations and principal component analyses.
  • Total GSE scores were computable for 336 participants (97%); internal consistency coefficient alpha was 0.95.
  • Principal component analysis identified one component explaining 69% of the variance, with item-total correlations exceeding 0.4.
  • Test-retest reliability yielded ICC values between 0.69 and 0.80, indicating acceptable reliability for the GSE in this population.

Cite This Study

Nilsson et al. (2015) studied this question.

synapsesocial.com/papers/6a33d429cce949c3f40e7a67https://doi.org/10.1111/ane.12368
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