Validation of the Spanish version of the Low Vision Quality of Life Questionnaire
J. optom. (Internet)
; 15(3): 1-11, Jul-Sep.2022. tab, graf
Artigo
em Inglês
| IBECS
| ID: ibc-204704
Biblioteca responsável:
ES1.1
Localização: BNCS
ABSTRACT
Purpose:
To validate the Spanish Low Vision Qualify of Life (SLVQOL) questionnaire, a quality of life instrument specifically designed for patients with visual impairment, and evaluate its psychometric properties.Methods:
The study included 170 visually impaired patients and 195 healthy subjects. Participants were administered the SLVQOL, the NEI VFQ-25, and the EQ 5D-5L questionnaires. Reliability, testretest reproducibility, feasibility, and construct validity of the SLVQOL were assessed. The Generalized Partial Credit Model was used to fit the data and the performance of each item was characterized using category response curves and item information.Results:
The reliability of the SLVQOL was 0.981 (95% CI 0.9780.985). Testretest reproducibility was good (ρ=0.864, P<.001). A cut-off point of 105 or 106 was optimal to detect visual impairment, with a sensitivity of 95.4% and a specificity of 91.8%. Construct validity was shown by the corresponding convergence or divergence correlations between the score of the SLVQOL and its dimensions and the overall and partial scores of the NEI VFQ-25 and the EQ 5D-5L. Item response theory analysis showed discrimination and information parameters ranging from 0.539 to 3.063 and from −1.894 to 1.074, respectively.Conclusion:
The SLVQOL was able to quantitatively assess and identify differences in the quality of life among patients with visual impairment and normal subjects. The evaluated psychometric properties suggest that this tool has excellent validity, internal consistency, and reproducibility, but may benefit from a reduction of the number of items. (AU)
Texto completo:
Disponível
Coleções:
Bases de dados nacionais
/
Espanha
Base de dados:
IBECS
Assunto principal:
Psicometria
/
Qualidade de Vida
/
Baixa Visão
/
Reprodutibilidade dos Testes
Limite:
Humanos
Idioma:
Inglês
Revista:
J. optom. (Internet)
Ano de publicação:
2022
Tipo de documento:
Artigo
Instituição/País de afiliação:
Aston University/UK
/
Hospital Universitari Germans Trias i Pujol (HUGTP-IGTP)/Spain
/
Hospital de la Esperanza, MAR Health Park/Spain
/
Hospital del Mar Medical Research Institute (IMIM)/Spain
/
Institut Català de la Retina/Spain
/
MAR Health Park/Spain
/
Universitat Oberta de Catalunya/Spain
/
Universitat Politècnica de Catalunya/Spain