Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire

Javad Heravian Shandiz; Hamed Momeni Moghaddam; James S Wolffsohn; Maliheh Karimpour

doi:10.1177/02646196231154473

Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire

Javad Heravian Shandiz, Hamed Momeni Moghaddam, James S Wolffsohn, Maliheh Karimpour

Research output: Contribution to journal › Article › peer-review

Abstract

Most of the vision quality assessment questionnaires are in English. None of the low-vision-related quality-of-life questionnaires have been translated or developed in Persian. It will help Persian optometrists and ophthalmologists to assess improvement of visual function and quality of life during their low-vision rehabilitation programs. In this study, we aimed to translate the low-vision quality-of-life (LVQOL) questionnaire in Persian language and apply exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) to assess the construct validity and fit model. Translation and cultural adjustment of the English language LVQOL questionnaire to Persian was undertaken. Overall, 100 low-vision patients were participated to validate and model the assessment questionnaire by both EFA and CFA methods. Complementary EFA and CFA results provide detailed information about item and scale performance of the Persian LVQOL. EFA showed Items 15, 16, and 21 which had factor loadings lower than 0.3. The modified model had the comparative fit index (CFI) and root mean square error of approximation (RMSEA) of 0.89 and 0.06, respectively. The translation, adjustment, and fit analysis of the LVQOL questionnaire into Persian were successful and it will be valuable in both clinical practice and research.

Original language	English
Journal	British Journal of Visual Impairment
Early online date	19 Feb 2023
DOIs	https://doi.org/10.1177/02646196231154473
Publication status	E-pub ahead of print - 19 Feb 2023

Bibliographical note

Copyright © The Author(s), 2023. This accepted manuscript version is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License [https://creativecommons.org/licenses/by-nc-nd/4.0/]. The final publication, 'Heravian Shandiz, J., Momeni Moghaddam, H. et al (2023). "Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire," British Journal of Visual Impairment,' is available at https://doi.org/10.1177/02646196231154473.

Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publica-tion of this article: This work was supported by Refractive Errors Research Center of Mashhad University of Medical Sciences, Mashhad, Iran (Grant no: 991701).

Keywords

Confirmatory factor analysis
exploratory factor analysis
low vision
quality of life
questionnaire

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10.1177/02646196231154473

EFA and CFA of LVQOL
Copyright © The Author(s), 2023. This accepted manuscript version is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License [https://creativecommons.org/licenses/by-nc-nd/4.0/]. The final publication, 'Heravian Shandiz, J., Momeni Moghaddam, H. et al (2023). "Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire," British Journal of Visual Impairment,' is available at https://doi.org/10.1177/02646196231154473.
Accepted author manuscript, 385 KBLicence: CC BY-NC-ND 4.0

Cite this

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title = "Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire",

abstract = "Most of the vision quality assessment questionnaires are in English. None of the low-vision-related quality-of-life questionnaires have been translated or developed in Persian. It will help Persian optometrists and ophthalmologists to assess improvement of visual function and quality of life during their low-vision rehabilitation programs. In this study, we aimed to translate the low-vision quality-of-life (LVQOL) questionnaire in Persian language and apply exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) to assess the construct validity and fit model. Translation and cultural adjustment of the English language LVQOL questionnaire to Persian was undertaken. Overall, 100 low-vision patients were participated to validate and model the assessment questionnaire by both EFA and CFA methods. Complementary EFA and CFA results provide detailed information about item and scale performance of the Persian LVQOL. EFA showed Items 15, 16, and 21 which had factor loadings lower than 0.3. The modified model had the comparative fit index (CFI) and root mean square error of approximation (RMSEA) of 0.89 and 0.06, respectively. The translation, adjustment, and fit analysis of the LVQOL questionnaire into Persian were successful and it will be valuable in both clinical practice and research.",

keywords = "Confirmatory factor analysis, exploratory factor analysis, low vision, quality of life, questionnaire",

author = "{Heravian Shandiz}, Javad and {Momeni Moghaddam}, Hamed and Wolffsohn, {James S} and Maliheh Karimpour",

note = "Copyright {\textcopyright} The Author(s), 2023. This accepted manuscript version is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License [https://creativecommons.org/licenses/by-nc-nd/4.0/]. The final publication, 'Heravian Shandiz, J., Momeni Moghaddam, H. et al (2023). {"}Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire,{"} British Journal of Visual Impairment,' is available at https://doi.org/10.1177/02646196231154473. Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publica-tion of this article: This work was supported by Refractive Errors Research Center of Mashhad University of Medical Sciences, Mashhad, Iran (Grant no: 991701).",

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doi = "10.1177/02646196231154473",

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T1 - Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire

AU - Heravian Shandiz, Javad

AU - Momeni Moghaddam, Hamed

AU - Wolffsohn, James S

AU - Karimpour, Maliheh

N1 - Copyright © The Author(s), 2023. This accepted manuscript version is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License [https://creativecommons.org/licenses/by-nc-nd/4.0/]. The final publication, 'Heravian Shandiz, J., Momeni Moghaddam, H. et al (2023). "Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire," British Journal of Visual Impairment,' is available at https://doi.org/10.1177/02646196231154473. Funding: The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publica-tion of this article: This work was supported by Refractive Errors Research Center of Mashhad University of Medical Sciences, Mashhad, Iran (Grant no: 991701).

PY - 2023/2/19

Y1 - 2023/2/19

N2 - Most of the vision quality assessment questionnaires are in English. None of the low-vision-related quality-of-life questionnaires have been translated or developed in Persian. It will help Persian optometrists and ophthalmologists to assess improvement of visual function and quality of life during their low-vision rehabilitation programs. In this study, we aimed to translate the low-vision quality-of-life (LVQOL) questionnaire in Persian language and apply exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) to assess the construct validity and fit model. Translation and cultural adjustment of the English language LVQOL questionnaire to Persian was undertaken. Overall, 100 low-vision patients were participated to validate and model the assessment questionnaire by both EFA and CFA methods. Complementary EFA and CFA results provide detailed information about item and scale performance of the Persian LVQOL. EFA showed Items 15, 16, and 21 which had factor loadings lower than 0.3. The modified model had the comparative fit index (CFI) and root mean square error of approximation (RMSEA) of 0.89 and 0.06, respectively. The translation, adjustment, and fit analysis of the LVQOL questionnaire into Persian were successful and it will be valuable in both clinical practice and research.

AB - Most of the vision quality assessment questionnaires are in English. None of the low-vision-related quality-of-life questionnaires have been translated or developed in Persian. It will help Persian optometrists and ophthalmologists to assess improvement of visual function and quality of life during their low-vision rehabilitation programs. In this study, we aimed to translate the low-vision quality-of-life (LVQOL) questionnaire in Persian language and apply exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) to assess the construct validity and fit model. Translation and cultural adjustment of the English language LVQOL questionnaire to Persian was undertaken. Overall, 100 low-vision patients were participated to validate and model the assessment questionnaire by both EFA and CFA methods. Complementary EFA and CFA results provide detailed information about item and scale performance of the Persian LVQOL. EFA showed Items 15, 16, and 21 which had factor loadings lower than 0.3. The modified model had the comparative fit index (CFI) and root mean square error of approximation (RMSEA) of 0.89 and 0.06, respectively. The translation, adjustment, and fit analysis of the LVQOL questionnaire into Persian were successful and it will be valuable in both clinical practice and research.

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KW - exploratory factor analysis

KW - low vision

KW - quality of life

KW - questionnaire

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JO - British Journal of Visual Impairment

JF - British Journal of Visual Impairment

ER -

Exploratory and confirmatory factor analysis of the Persian version of the low-vision quality-of-life questionnaire

Abstract

Bibliographical note

Keywords

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