Abstract:: Purpose: Despite an insidious onset without symptoms, patients with open–angle glaucoma (OAG) may experience difficulty with daily activities from. Purpose.: To investigate, using Rasch analysis, whether the item Glaucoma Quality of Life (GQL) forms a valid scale and to optimize. Abbreviation / Long Form: GQL / Glaucoma Quality of Life Questionnaire Abbreviation: GQL (>> Co-occurring Abbreviation). Long Form: Glaucoma.
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However, a difference of person and item means of up to 1 logit is acceptable. A medium association was also observed between questionnaire score and visual acuity, and it was slightly higher with the eye worse eye 0.
A comparison of the NEIVFQ25 and GQL questionnaires in Nigerian glaucoma patients
Nelson et al, 16 on the other hand, found a statistically significant difference in the GQL QOL scores of mild and severe glaucoma patients but did not find a statistically significant difference in scores of patients with mild and moderate glaucoma, as in the present study, or in those with moderate and severe glaucoma.
The NEIVFQ25 a nonglaucoma-specific questionnaire and the GQL a glaucoma-specific questionnaire are compared in this study with a view to assessing their correlation in this group of participants and to determine which of the instruments is better suited to assess QOL questionnaaire in Nigerian glaucoma patients, given the paucity of data on QOL questionnair this population.
This suggests a high degree of correlation between similar domains or subscales of both instruments. The Glaucoma Quality of Life Questionnaire correlated well with objective measures of visual function and discriminated between quality of life in patients with glaucoma and subjects without glaucoma.
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Mitchell J, Bradley C. Rasch analysis generates a person-item map that provides a visual observation of the relative position of item difficulty to person ability. The line plots clearly show that the slope of the plot questiomnaire the QOL from mild to moderate is much less than the slope of the plot from control to mild or moderate to severe for both questionnaires.
Indeed, the papers describing its development explain that the purpose is to measure self-reported visual disability despite the name containing the term quality of life. For example they may be related to near vision correction rather than to glaucoma; hence, these items do not behave questionnaird across the whole population. A new name, the Glaucoma Activity Limitation GAL-9 questionnaire, is proposed for the short version, which better reflects the construct under measurement.
The purpose of the 3-month period was to ensure that the surgical experience was not recent and would not significantly influence QOL responses. The contrasts in the residuals report unexplained variance by the principal qestionnaire. Use of patient-reported outcomes in medical product development: Niger Postgrad Med J.
The Glaucoma Symptom Scale: This article has been cited by other articles in PMC. Vision-related QOL instruments may be disease-specific or nonspecific. VogelNone; M. Rasch analysis of subscale validity.
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Glaucoma Quality of Life Questionnaire (GQL) – Allie: Abbreviation / Long Form Info.
KerntNone; C. As in the longer version, the remaining nine items were also free of DIF by age and sex. All 15 items fit the Rasch model within liberal infit 0.
Influence of glaucomatous visual field loss on health-related quality of life. Participation restrictions are barriers to involvement in life situations caused by activity limitation, such as inability to go shopping because of inability to cross the road.
The nondisease-specific vision-related QOL instruments include: One hundred thirty-two patients with a confirmed diagnosis of POAG were enrolled in the study. Most of these patients had bilateral disease Infit is more sensitive to unexpected responses to items by participants whose ability is near inliers item difficulty level, whereas outfit is more sensitive to unexpected responses to items by participants whose ability is far outliers from item difficulty level.
A comparison of the NEIVFQ25 and GQL-15 questionnaires in Nigerian glaucoma patients
POAG was defined as the presence of glaucomatous optic nerve head changes, open anterior chamber angles, and visual field loss with or without an elevated IOP in one or both eyes. Using a prospective, cross-sectional study, we collected demographic information via interviews and administered the questionnaire to assess glaucoma-related quality questionnaide life in patients with glaucoma and 31 subjects without glaucoma.
By default, the item mean is placed at 0 logit.