Validation of an ultra-short global quality of life scale in a large population-based health survey

John-Kåre Vederhus, Christine Timko, Bente Birkeland, Siri Håvås Haugland and Karin Berle Gabrielsen

PLOS ONE, 2024, vol. 19, issue 8, 1-14

Abstract: Introduction: Quality of life (QoL) assessment is essential in health-related research and clinical settings, offering insights into individuals’ well-being and functioning. This study validated the Essential QoL-3 (EQoL-3), an ultra-short scale assessing essential dimensions of QoL, for use in epidemiological research and clinical settings. Methods: Data from a 2021 national survey in Norway (N = 17,487) were used. Three items on the EQoL-3 assess life satisfaction, happiness, and meaningfulness on a 0–10 scale. Discriminant validity was assessed by comparing the EQoL-3 with the Satisfaction with Life Scale (SWLS) and by examining latent mean differences between individuals with adverse life experiences (ALE+) and those without such experiences (ALE-). Convergent validity was evaluated through latent regression analyses comparing the EQoL-3 with a perceived mastery scale and a mental distress scale. Results: The discriminant validity of the EQoL-3 was less than optimal when compared with the SWLS. Nonetheless, a multigroup confirmatory factor analysis revealed that the EQoL-3 score was 1.42 (95% CI = 1.33–1.50, p

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0307539

DOI: 10.1371/journal.pone.0307539

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