| Titre : | Validation of the WHOQOL-BREF and Shorter Versions Using Rasch Analysis in Traumatic Brain Injury and Orthopedic Populations (2019) |
| Auteurs : | Shivanthi K. Balalla ; Oleg N. Medvedev ; Richard J. Siegert |
| Type de document : | Article |
| Dans : | Archives of Physical Medicine and Rehabilitation (Vol. 100, n° 10, 2019) |
| Article en page(s) : | p. 1853-1862 |
| Langues: | Anglais |
| Descripteurs : |
HE Vinci Lésions traumatiques de l'encéphale ; Orthopédie ; Psychométrie ; Qualité de vie ; Réadaptation |
| Résumé : |
Objective
To use Rasch analysis to validate the World Health Organization Quality of Life-BREF (WHOQOL-BREF) and existing short versions in individuals with traumatic brain injury and orthopedic injuries, with comparisons to a general population group. Design The Partial Credit Rasch model was applied to evaluate the WHOQOL-BREF as well as shortened versions using a cross-sectional study design. Setting Regional hospital, and national electoral sample in New Zealand. Participants Individuals with traumatic brain injury (n=74), individuals with orthopedic injuries (n=114), general population (n=140). Interventions None. Main Outcome Measure WHOQOL-BREF. Results The WHOQOL-BREF met expectations of the unidimensional Rasch model and demonstrated good reliability (person separation index [PSI] =0.82) when domain items were combined into physical-psychological, social, and environmental superitems. Analysis of shorter versions, the EUROHIS-QOL-8 and World Health Organization Quality of Life-5 (WHOQOL-5), indicated overall acceptable fit to the Rasch model and evidence of unidimensionality. The EUROHIS-QOL-8 showed good reliability (PSI=0.81); however, reliability of the WHOQOL-5 (PSI=0.68) was below acceptable standards for group comparisons, in addition to demonstrating poor person-item targeting. Conclusions The WHOQOL-BREF and the 8-item EUROHIS-QOL-8 version are both reliable and valid in the assessment of quality of life in both injury and general populations. Ordinal-interval conversion tables published for these validated scales as well as for the WHOQOL-5 can be used to improve precision of assessment. The transformation of ordinal scale scores into an interval measure of health-related quality of life also permits the calculation of a single summary score for the WHOQOL-BREF, which will be useful in a wide range of clinical and research contexts. Further validation work of the WHOQOL-5 is needed to ascertain its psychometric properties. |
| Disponible en ligne : | Oui |
| En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S0003999319303983 |
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