Psychometric Properties of the Turkish Version of the Abiloco: Factor Analysis

Eval Health Prof. 2024 Mar;47(1):119-125. doi: 10.1177/01632787231172776. Epub 2023 May 1.

Abstract

The ABILOCO is a questionnaire measuring mobility in stroke patients. The aim of the study was to evaluate the psychometric properties of the ABILOCO-Turkish. One hundred forty stroke patients were included. Thirteen items were rated according to 3 levels: difficult, easy, and impossible. The construct validity of the ABILOCO-Turkish was investigated using exploratory and confirmatory factor analysis. The reliability of the ABILOCO-Turkish was investigated through internal consistency approaches and test-retest reliability. The ABILOCO-Turkish was compared with the Timed Up & Go (TUG) test and the Berg Balance Scale for validity. The scale was repeated 1 week later for test-retest reliability. The Cronbach's alpha value calculated was 0.96 and item-total score correlations were between 0.464 and 0.899. The intraclass correlation coefficient (ICC) calculated for test-retest reliability was 0.989. According to the results, the ABILOCO-Turkish is highly correlated with the TUG (r: -0.830, p < 0.001) and the Berg Balance Scale (r: 0.919, p < 0.001). The exploratory factor analysis of the ABILOCO-Turkish showed that it is unidimensional, with this factor explaining 66.56% of the variance, and the construct validity was proven by confirmatory factor analysis. The Turkish version of the ABILOCO is a reliable and valid scale for evaluating mobility in stroke patients.

Keywords: Factor analysis; locomotion; stroke.

MeSH terms

  • Factor Analysis, Statistical
  • Humans
  • Psychometrics / methods
  • Reproducibility of Results
  • Stroke*
  • Surveys and Questionnaires