See the published version of this preprint at International Ophthalmology.
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Research Article
Dina Lešin Gaćina
CHC Zagreb: Klinicki Bolnicki Centar Zagreb
Corresponding Author
ORCiD: https://orcid.org/0000-0002-2468-2195
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Purpose: The purpose of study was to translate, adapt and validate the Croatian version of the 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25) in participants with visual impairment. This study also aims at evaluating the relationship between visual impairment and health-related quality of life (HRQoL).
Methods: The prospective observational study was conducted at the University Hospital Centre Zagreb, Department of Ophthalmology. The sample consisted of 175 patients with four chronic ocular diseases: cataract, glaucoma, diabetic retinopathy and age-related macular degeneration (ARMD). The translation of the NEI VFQ-25 to Croatian was conducted following the standardized procedure. All participants underwent an ophthalmological examination and completed the NEI VFQ-25 and the Medical Outcomes Study Short Form-36 Questionnaire (SF-36). In order to assess the psychometric properties of the NEI VFQ-25 we calculated Cronbach's α coefficient, intraclass correlation coefficient (ICC), convergent and discriminant validity, as well as criterion and concurrent validity.
Results: Results show high internal consistency (Cronbach α range 0.739-0.932) and high test-retest reliability (ICC 0.876-0.975) for all subscales. None of the items had failed either convergent or discriminant validity. Moderate to high Spearman's rho coefficients of correlations were found between best corrected visual acuity and 8 subscales in the NEI VFQ-25 (0.430<ρ<0.631). Moderate correlations were found between comparable domains in the NEI VFQ-25 and in the SF-36 questionnaire (p<0.01).
Conclusion: The Croatian version of the NEI VFQ-25 has very good psychometric properties and can be a useful instrument for assessing vision-related quality of life in Croatian population with chronic ophthalmic diseases.
The trial registration number: DRKS-ID DRKS00016751
Date of registration in DRKS: 2019/02/15
Keywords
psychometrics, questionnaires, visual function, quality of life, NEI VFQ-25, Croatian
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CURRENT STATUS: Published
View the published article at International Ophthalmology.
Version 1
Posted 14 Apr, 2021
No community comments so far
Editorial decision: Accept
On 16 Jul, 2021
Editor assigned
On 09 Jun, 2021
Reviews received
Received 05 May, 2021
Reviewers invited
Invitations sent on 12 Apr, 2021
First submitted
On 11 Apr, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Ophthalmology
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A new preprint design is coming!
We have improved readability, clarity, accessibility, and opportunities for engagement.
See the published version of this preprint at International Ophthalmology.
This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research Article
Dina Lešin Gaćina
CHC Zagreb: Klinicki Bolnicki Centar Zagreb
Corresponding Author
ORCiD: https://orcid.org/0000-0002-2468-2195
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
View the published article at International Ophthalmology.
Version 1
Posted 14 Apr, 2021
No community comments so far
Editorial decision: Accept
On 16 Jul, 2021
Editor assigned
On 09 Jun, 2021
Reviews received
Received 05 May, 2021
Reviewers invited
Invitations sent on 12 Apr, 2021
First submitted
On 11 Apr, 2021
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Ophthalmology
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published article at International Ophthalmology.
Purpose: The purpose of study was to translate, adapt and validate the Croatian version of the 25-item National Eye Institute Visual Function Questionnaire (NEI VFQ-25) in participants with visual impairment. This study also aims at evaluating the relationship between visual impairment and health-related quality of life (HRQoL).
Methods: The prospective observational study was conducted at the University Hospital Centre Zagreb, Department of Ophthalmology. The sample consisted of 175 patients with four chronic ocular diseases: cataract, glaucoma, diabetic retinopathy and age-related macular degeneration (ARMD). The translation of the NEI VFQ-25 to Croatian was conducted following the standardized procedure. All participants underwent an ophthalmological examination and completed the NEI VFQ-25 and the Medical Outcomes Study Short Form-36 Questionnaire (SF-36). In order to assess the psychometric properties of the NEI VFQ-25 we calculated Cronbach's α coefficient, intraclass correlation coefficient (ICC), convergent and discriminant validity, as well as criterion and concurrent validity.
Results: Results show high internal consistency (Cronbach α range 0.739-0.932) and high test-retest reliability (ICC 0.876-0.975) for all subscales. None of the items had failed either convergent or discriminant validity. Moderate to high Spearman's rho coefficients of correlations were found between best corrected visual acuity and 8 subscales in the NEI VFQ-25 (0.430<ρ<0.631). Moderate correlations were found between comparable domains in the NEI VFQ-25 and in the SF-36 questionnaire (p<0.01).
Conclusion: The Croatian version of the NEI VFQ-25 has very good psychometric properties and can be a useful instrument for assessing vision-related quality of life in Croatian population with chronic ophthalmic diseases.
The trial registration number: DRKS-ID DRKS00016751
Date of registration in DRKS: 2019/02/15
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