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Titre : | Rasch Analysis of the International Quality of Life Basic Data Set Version 2.0 (2022) |
Auteurs : | Marcel W.M. Post ; Carolina S. Fellinghauer ; Susan Charlifue ; Peter W. New ; Martin B. Forchheimer ; Denise G. Tate |
Type de document : | Article |
Dans : | Archives of Physical Medicine and Rehabilitation (Vol. 103, n° 11, 2022) |
Article en page(s) : | p. 2120-2130 |
Note générale : | https://doi.org/10.1016/j.apmr.2022.02.018 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Etudes de validation ; Psychométrie ; Qualité de vie ; Réadaptation ; Traumatismes de la moelle épinière |
Résumé : |
Objective
To examine the internal construct validity of the International Spinal Cord Injury Quality of Life Basic Data Set Version 2.0 (QoL-BDS V2.0) and compare this with the internal construct validity of the original version of the QoL-BDS. Design International cross-sectional psychometric study. Setting Spinal rehabilitation units, clinics, and community. Participants The study involved 5 sites and 4 countries, 2 of whose primary language is not English. Each site included a consecutive sample of inpatients with spinal cord injury or disease (SCI/D) and a convenience sample of individuals with SCI/D living in the community (N=565). Main Outcome Measures The QoL-BDS V2.0 consists of the 3 original items on satisfaction with life as a whole, physical health, psychological health of the QoL-BDS, and an additional item on satisfaction with social life. All 4 items are answered on a 0-10 numeric rating scale. Rasch analysis was performed on versions 1.0 and 2.0 of the QoL-BDS to examine the ordering of the items response options, item scaling, reliability, item fit, local item independence, differential item functioning, and unidimensionality. Results The sample included 565 participants with 57% outpatients and 43% inpatients. Mean age was 51.4 years; 71% were male; 65% had a traumatic injury, 40% had tetraplegia, and 67% were wheelchair users. Item thresholds were collapsed for ordering, and subsequent analyses showed good internal construct validity for the QoL-BDS V2.0 with a person separation reliability of 0.76 and Cronbach α of 0.81. Infit and outfit statistics ranged 0.62-0.91. No local dependencies and multidimensionality were found. Differential item functioning was observed only for country and inpatients vs outpatients but not for other participants characteristics. Differences in internal construct validity between the 3-item and 4-item versions were minimal. Conclusions The results of this Rasch analysis support the internal construct validity of the QoL-BDS V2.0. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S0003999322002763 |