卡纳达语版改良（29项模型）印度视觉功能评估问卷的心理测量学评估与推导

Psychometric evaluation and derivation of the Kannada version of the modified (29-item model) Indian Vision Function Assessment Questionnaire.

作者信息

Kaup Soujanya, Dsouza Jyoshma, Shivalli Siddharudha, Savur Sheetal, Hegde Vidya

机构信息

Department of Ophthalmology, Yenepoya Deemed University, Deralakatte, Mangalore, Karnataka, India.

International Agency for Research on Cancer, Lyon, France.

出版信息

Indian J Ophthalmol. 2025 Mar 1;73(3):429-436. doi: 10.4103/IJO.IJO_1773_24. Epub 2024 Dec 27.

DOI:10.4103/IJO.IJO_1773_24

PMID:39728611

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7617351/

Abstract

BACKGROUND/AIMS: India's linguistic and cultural diversity necessitates a region-specific validated Visual Functioning Questionnaire. The objective of this study was to translate the Indian Vision Function Questionnaire-33 (IND-VFQ-33) into the Kannada language and test its psychometric properties, underlying factor structure, and model fit.

METHODS

A cross-sectional study was conducted among 330 participants, and basic psychometric properties (reliability, convergent, discriminant, construct validity, responsiveness, etc.) were assessed. The underlying factor structure was evaluated by exploratory factor analysis (EFA) and model fit by confirmatory factor analysis (CFA).

RESULTS

The Kannada version of IND-VFQ-33 exhibited robust psychometric properties [excellent content validity, reliability (Cronbach α = 0.91), test-retest reliability (Rho S = 0.99; P < 0.001), convergent (Rho S = 0.58; P < 0.001), and discriminant validity (Rho S = 0.06; P = 0.274)]. On EFA, items in the general functioning subscale fell into two categories, namely "Mobility" (10 items: Q1, Q2, Q4-Q9, Q15, and Q16) and "Daily Activities" (8 items: Q3, Q10, Q11, and Q17-Q21), and two other subscales "psycho-social impact" subscale (Q22-Q26) and the "visual symptoms" subscale (Q27-Q32, excluding Q33). Thus, a new Kannada-translated VFQ-29 questionnaire was derived with excellent psychometric properties. All observed variables showed significant factor loadings on their respective latent constructs (>0.50), establishing convergent validity on CFA by using the structural equation model. The model-fit to the data assessed by various indices [Root Mean Squared Error of Approximation = 0.08 (90% CI: 0.081-0.091); Comparative Fit Index = 0.877; Tucker-Lewis Index = 0.866; Akaike's Information Criterion = 23447.133; Bayesian Information Criterion = 23800.45, and Coefficient of Determination = 0.998] demonstrated acceptable fit.

CONCLUSION

The refined 29-item Kannada-translated IND-VFQ model not only offers an improved factor structure across four subscales but also consistently demonstrates excellent reliability, convergent and discriminant validity, and responsiveness.

摘要

背景/目的：印度的语言和文化多样性需要一份针对特定地区经过验证的视觉功能问卷。本研究的目的是将印度视觉功能问卷33（IND-VFQ-33）翻译成卡纳达语，并测试其心理测量学特性、潜在因子结构和模型拟合度。

方法

对330名参与者进行了一项横断面研究，并评估了基本心理测量学特性（信度、收敛效度、区分效度、结构效度、反应度等）。通过探索性因子分析（EFA）评估潜在因子结构，通过验证性因子分析（CFA）评估模型拟合度。

结果

IND-VFQ-33的卡纳达语版本表现出强大的心理测量学特性[出色的内容效度、信度（Cronbach α = 0.91）、重测信度（Rho S = 0.99；P < 0.001）、收敛效度（Rho S = 0.58；P < 0.001）和区分效度（Rho S = 0.06；P = 0.274）]。在探索性因子分析中，一般功能子量表中的项目分为两类，即“活动能力”（10个项目：Q1、Q2、Q4-Q9、Q15和Q16）和“日常活动”（8个项目：Q3、Q10、Q11和Q17-Q21），另外还有两个子量表“心理社会影响”子量表（Q22-Q26）和“视觉症状”子量表（Q27-Q32，不包括Q33）。因此，得出了一个新的卡纳达语翻译版VFQ-29问卷，具有出色的心理测量学特性。所有观察变量在各自的潜在结构上均显示出显著的因子载荷（>0.50），通过使用结构方程模型在验证性因子分析中建立了收敛效度。通过各种指标评估的数据模型拟合度[近似均方根误差 = 0.08（90% CI：0.081-0.091）；比较拟合指数 = 0.877；塔克-刘易斯指数 = 0.866；赤池信息准则 = 23447.133；贝叶斯信息准则 = 23800.45，以及决定系数 = 0.998]表明拟合度可接受。