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. 2023 Oct;75(10):2158-2165.
doi: 10.1002/acr.25115. Epub 2023 Apr 26.

Evaluation of Measurement Properties and Differential Item Functioning in the English and French Versions of the University of California, Los Angeles, Loneliness Scale-6: A Scleroderma Patient-Centered Intervention Network (SPIN) Study

Chelsea S Rapoport  1 , Alyssa K Choi  1 , Linda Kwakkenbos  2 , Marie-Eve Carrier  3 , Richard S Henry  4 , Luc Mouthon  5 , Scott C Roesch  6 , Brett D Thombs  4 , Vanessa L Malcarne  6 ; SPIN COVID-19 Patient Advisory Team; SPIN Investigators
Collaborators, Affiliations

Evaluation of Measurement Properties and Differential Item Functioning in the English and French Versions of the University of California, Los Angeles, Loneliness Scale-6: A Scleroderma Patient-Centered Intervention Network (SPIN) Study

Chelsea S Rapoport et al. Arthritis Care Res (Hoboken). 2023 Oct.

Abstract

Objective: Loneliness has been associated with poorer health-related quality of life but has not been studied in patients with systemic sclerosis (SSc). The current study was undertaken to examine and compare the psychometric properties of the English and French versions of the University of California, Los Angeles, Loneliness Scale-6 (ULS-6) in patients with SSc during the COVID-19 pandemic.

Methods: This study used baseline cross-sectional data from 775 adults enrolled in the Scleroderma Patient-Centered Intervention Network (SPIN) COVID-19 Cohort. Reliability and validity of ULS-6 scores overall and between languages were evaluated using confirmatory factor analysis (CFA), differential item functioning (DIF) through the multiple-indicator multiple-cause (MIMIC) model, omega/alpha calculation, and correlations of hypothesized convergent relationships.

Results: CFA for the total sample supported the single-factor structure (comparative fit index [CFI] 0.96, standardized root mean residual [SRMR] 0.03), and all standardized factor loadings for items were large (0.60-0.86). The overall MIMIC model with language as a covariate fit well (CFI 0.94, SRMR 0.04, root mean square error of approximation 0.11). Statistically significant DIF was found for 3 items across language (βitem2 = 0.14, P < 0.001; βitem4 = -0.07, P = 0.01; βitem6 = 0.13, P < 0.001), but these small differences were without practical measurement implications. Analyses demonstrated high internal consistency with no language-based convergent validity differences.

Conclusion: Analyses demonstrated evidence of acceptable reliability and validity of ULS-6 scores in English- and French-speaking adults with SSc. DIF analysis supported use of the ULS-6 to examine comparative experiences of loneliness without adjusting for language.

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References

REFERENCES

    1. Hawkley LC, Cacioppo JT. Loneliness matters: a theoretical and empirical review of consequences and mechanisms. Ann Behav Med 2010;40:218-27.
    1. Petitte T, Mallow J, Barnes E, et al. A systematic review of loneliness and common chronic physical conditions in adults. Open Psychol J 2015;8 Suppl 2:113-32.
    1. Mancuso CA, Duculan R, Jannat-Khah D, et al. Rheumatic disease-related symptoms during the height of the COVID-19 pandemic. HSS J 2020;16 Suppl 1:36-44.
    1. Ernst M, Niederer D, Werner AM, et al. Loneliness before and during the COVID-19 pandemic: a systematic review with meta-analysis. Am Psychol 2022;77:660-77.
    1. Allanore Y, Simms R, Distler O, et al. Systemic sclerosis. Nat Rev Dis Primers 2015;1:15002.

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