A confirmatory factor analysis for an adapted and validated Polish version of the Chalder Fatigue Questionnaire

• Authors: Agata Zdun-Ryżewska , Krzysztof Basiński , Anna Michalik

Abstracts

EN

ObjectivesThe Chalder Fatigue Questionnaire (CFQ) was developed to measure fatigue in 2 dimensions: physical and mental. The aim of the study was to translate, adapt and evaluate the psychometric properties of the Polish version of the CFQ (CFQ-PL).Material and MethodsThe process of translation was conducted using a forward and backward translation procedure. After cultural adaptation, the psychometric properties of the CFQ-PL were evaluated. Participants of the study were healthy individuals: medical students (N = 304) and pregnant women (pregnancy without complications, N = 925). The reliability and validity were estimated using fatigue numerical rating scales, the Beck Depression Inventory and the State-Trait Anxiety Inventory. To examine the factor structure of the CFQ-PL, a confirmatory factor analysis was conducted.ResultsThe internal consistency of the CFQ-PL was similar to the original version (Cronbach’s α 0.85–0.91). Statistically significant correlations between the CFQ-PL and the current fatigue level, average fatigue and the sleepiness level (measured using numerical rating scales), as well as the intensity of depression and anxiety symptoms, all confirming the validity of the adapted scale. Using a confirmatory factor analysis, it was determined that a 1-factor model did not fit the data well. A 2-factor model with a correlation between mental and physical factors fitted better than the 1-factor model, yet fit indices revealed a poor fit. Using a 2-factor model with added covariance between items – 1 (problems with fatigue), 2 (resting more), 9 (slips of the tongue), 10 (finding the correct word) – resulted in acceptable fit indices in both groups of participants.ConclusionsAfter the process of translation, adaptation and validation of the CFQ-PL, it is now available for use under Polish conditions. This study provided evidence for structural validity of the 2-factor model of the 11-item version.

Keywords

EN

Chalder Fatigue Questionnaire; fatigue; validation; factor structure; confirmatory analysis; adaptation

• Publisher: Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
• Journal: International Journal of Occupational Medicine and Environmental Health
• Year: 2019
• Volume: 33
• Issue: 1
• Pages: 67-76

Dates

published

2020

Contributors

author

Agata Zdun-Ryżewska

• Medical University of Gdansk, Gdańsk, Poland (Faculty of Health Sciences, Department of Quality of Life Research)

author

Krzysztof Basiński

• Medical University of Gdansk, Gdańsk, Poland (Faculty of Health Sciences, Department of Quality of Life Research)

author

Anna Michalik

• Medical University of Gdansk, Gdańsk, Poland (Faculty of Health Sciences, Department of Obstetric and Gynaecological Nursing)

Identifiers

DOI

10.13075/ijomeh.1896.01497

Biblioteka Nauki

2116721