Validation and Update of the Glaucoma Quality of Life (GQL)-15 Questionnaire for Spanish-Speaking Individuals
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View abstract on PubMed
Summary
This summary is machine-generated.The updated Glaucoma Quality of Life-15 (GQL-15 m) questionnaire is a reliable tool for assessing quality of life in Spanish-speaking glaucoma patients. This validated instrument helps measure functional disability and improve patient care.
Area Of Science
- Ophthalmology
- Quality of Life Research
- Psychometrics
Background
- Glaucoma is a leading cause of irreversible blindness, significantly impacting patients' quality of life (QoL).
- The Glaucoma Quality of Life-15 (GQL-15) is a 15-item questionnaire assessing glaucoma-related functional disability across four domains.
- The GQL-15 has not been previously validated for use in Spanish-speaking populations.
Purpose Of The Study
- To validate and update the GQL-15 for Spanish-speaking individuals with glaucoma.
- To modernize the questionnaire by adapting an item to reflect current technology use.
Main Methods
- A cross-sectional study was conducted with 157 glaucoma patients at two referral centers in Cali, Colombia.
- The GQL-15 was translated into Spanish and modified (GQL-15 m) by replacing the 'reading newspaper' item with 'reading on a cellphone/mobile/smartphone'.
- Validity and reliability were assessed using Cronbach's alpha, exploratory factor analysis, and criterion validity. Reproducibility was evaluated via test-retest analysis.
Main Results
- The GQL-15 m demonstrated high internal consistency (α = 0.96) and reproducibility (ICC = 0.89).
- Criterion validity was confirmed through significant correlations with established measures including NEI-VFQ 25, WHOQoL-BREF, GSS, GUI, and visual acuity.
- The mean total score of 29.3 ± 7.31 suggested generally good QoL among participants.
Conclusions
- The GQL-15 m is a reliable and valid instrument for assessing QoL in Spanish-speaking glaucoma patients.
- The modernized questionnaire is suitable for use across diverse cultural contexts.
- This validated tool can aid in better understanding and managing the functional impact of glaucoma.
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