| 3 | Validation of the Glaucoma Quality of Life-15 Questionnaire in Serbian language显示文摘AIM:To translate the Glaucoma Quality of Life-15(GQL-15)to Serbian language and asses its validity and reliability in the population of Serbian patients.METHODS:The study included 177 glaucoma patients.Clinical parameters(visual acuity,mean defect and square root of loss variance of visual field)and socio-demographic data were collected.Patients were stratified according to the Nelson’s glaucoma staging system as mild,moderate and advanced glaucoma.All patients filled out the GQL-15 and National Eye Institute Visual Function Questionnaire(NEI-VFQ 25).The GQL-15 was translated following the internationally-accepted methodology,and its psychometric properties were assessed by using classical test theory and Rasch analysis.RESULTS:The mean total score for the GQL-15 was 20.68±7.31.The Cronbach’s alpha coefficient for the whole scale was 0.89(central and near vision,α=0.24;peripheral vision,α=0.85;glare and dark adaptation,α=0.83).Factor analysis established 4 factors(70.3% of variance):two corresponding to the original factors and two new factors specific for the Serbian population.The GQL-15 score correlated positively with almost all clinical parameters and NEI-VFQ 25 proving good criterion validity.Correlation of the GQL-15 total score on test-retest confirmed appropriate scale reproducibility(ρ=0.96,P<0.001).The GQL-15 discriminated well advanced from mild and moderate glaucoma.In Rasch analysis we obtained adequate item(0.95)reliability index.Almost all items had infit and outfit mean squares in the accepted range.CONCLUSION:Serbian version of the GQL-15 demonstrates adequate reliability and validity.This version of the GQL-15is a valid instrument for evaluation of quality of life among Serbian speaking patients with glaucoma and can be applied in daily clinical work. | Ivan Sencanic Tatjana Gazibara Jelena Dotlic Miroslav Stamenkovic Vesna Jaksic Marija Bozic Anita Grgurevic | 2018 | International Journal of Ophthalmology(English edition)2018，11，10： | 1 |
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