ABSTRACT
Background
The Work Role Functioning Questionnaire 2.0 (WRFQ 2.0) is an important instrument within the context of occupational health, consisting of 27 items and 5 domains. In addition, a short version of WRFQ 2.0 with 5 items (WRFQ-5) was proposed, showing agreement with the long version. Thus, we aimed to confirm the number of factors of the WRFQ-5 short version and to verify the structural, construct, and criterion validity, reliability, internal consistency, and analysis of ceiling and floor effects of the Brazilian version of the WRFQ-5 in a general workers population.
Methods
A questionnaire validation and measurement properties study. We evaluated the internal structure of the WRFQ-5 by means of confirmatory factor analysis. Construct validity was assessed by correlating the WRFQ-5 with the Numerical Pain Rating Scale (NPRS), Work Ability Index (WAI), and Self-Estimated Functional Inability because of Pain (SEFIP-work). Criterion validity was assessed by correlating the WRFQ-5 with the 5 domains of the WRFQ 2.0. Test-retest reliability and internal consistency were also evaluated.
Results
We observed positive correlations (p < .05) between the WRFQ-5 and the WAI (rho = 0.161 to 0.308) and negative correlations (p < .05) between the WRFQ-5 and the SEFIP-work (rho = −0.293). The WRFQ-5 significantly and positively correlates with the 5 domains of WRFQ 2.0 (rho = 0.742 to 0.830). The test-retest reliability of the WRFQ-5 was excellent (ICC2,1 = 0.935) and the internal consistency was adequate (Cronbach’s alpha = 0.938). We did not observe ceiling and floor effects.
Conclusion
The one-dimensional internal structure of the WRFQ-5 in Brazilian Portuguese has a valid internal structure and construct, as well as adequate reliability and internal consistency.
Acknowledgments
We thank the participants of the present study for their collaboration.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Correction Statement
This article has been corrected with minor changes. These changes do not impact the academic content of the article.