Validation of an instrument to assess visual ability in children with visual impairment in China

Huang, Jinhai; Khadka, Jyoti; Zhang, Sifang; Dong, Wenfang; Bao, Fangjun; Chen, Haisi; Wang, Qinmei; Chen, Hao; Pesudovs, Konrad

doi:10.1136/bjophthalmol-2016-308866

Cited by 5 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the children included in this study completed the CVAQC. The median of the CVAQC scores was 18.00 (IQR, 6.00–28.00), suggesting a moderate impairment of FVA in these patients [ 14 , 15 ] (Table 2 ). In addition, Spearman rank correlation test showed no significant association of the CVAQC scores with age or the parameters investigated including BCVA, undergoing of surgery, medication used, ocular complications, or systemic signs (Table 3 ).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Comprehensive evaluation of functional vision, quality of life, and cognitive ability in pediatric uveitis

Wan,

Chen,

Xun

et al. 2023

BMC Ophthalmol

View full text Add to dashboard Cite

Background Pediatric uveitis may cause severe impairment of vision in children and affect their quality of life as well as cognitive ability. This study aims to evaluate the functional vision, visual-related and health-related quality of life, and cognitive ability in pediatric uveitis. Methods Children with uveitis aged 5–16 years old completed six validated instruments to assess functional visual ability with Cardiff Visual Ability Questionnaire for Children (CVAQC), vision-related quality of life with Impact of Vision Impairment for Children (IVI-C), health-related quality of life with Pediatric Quality of Life Inventory (PedsQL), cognitive ability with Chinese Wechsler Intelligence Scale for Children (C-WISC), and depression and anxiety evaluation with Hospital Anxiety and Depression Scale (HAD). Results The CVAQC, IVI-C, and PedsQL scores of pediatric uveitis were significantly lower than that of normal levels. Full-scale intelligence quotient (IQ) and performance IQ were significantly lower in pediatric uveitis patients with impaired vision in their best eye (visual acuity < 0.3) compared to those with a vision equal to or better than 0.3. Verbal IQ was significantly lower in male pediatric uveitis patients with impaired vision compared to those with a vision equal to or better than 0.3. Additionally, parents of pediatric uveitis patients with impaired vision generally had lower educational levels than parents of those with a vision equal to or better than 0.3. Conclusions Impaired vision caused by pediatric uveitis has a significant impact on children’s functional visual ability and quality of life. The development of cognitive function in pediatric uveitis is also significantly hindered.

show abstract

Section: Resultsmentioning

confidence: 99%

“…CVAQC is a self-report tool including 25 questions, which cover the areas of education, near/distance vision, social interaction, entertainment, and sports. Each question was answered based on a 4-point scale (0–3 points), resulting in total scores ranging from 0 (normal visual ability) to 75 (severe visual impairment) [ 14 , 15 ].…”

Section: Methodsmentioning

confidence: 99%

Comprehensive evaluation of functional vision, quality of life, and cognitive ability in pediatric uveitis

Wan,

Chen,

Xun

et al. 2023

BMC Ophthalmol

View full text Add to dashboard Cite

show abstract

“…The main objective of this study is to attempt to introduce an alternative application of Rasch analysis, which is specific to the cohort under investigation, as an alternative to the current misuse of the method to dismiss [ 9 ]–[ 18 ] or approve [ 9 ], [ 14 ], [ 21 ]–[ 30 ] a questionnaire based on the misfit statistics of data from a single and potentially non-representative cohort of patients, occasionally with a relatively small sample size e.g. [ 10 ]–[ 12 ], [ 16 ], [ 20 ], [ 21 ].…”

Section: Application Of Rasch Analysis To Assess Data From An Ophthmentioning

confidence: 99%

“…The approach currently advocated for validating ophthalmic questionnaires is entirely based on the analysis of fit of the Rasch model on data from a single potentially non representative cohort of patients, occasionally with a relatively small sample size e.g. [ 10 ]–[ 12 ], [ 16 ], [ 20 ], [ 21 ]. However, it is well recognized that the analysis of fit for the Rasch model is a never ending process since a continued use of the instrument requires constant monitoring of the item and person responses to maintain quality control [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

An alternative application of Rasch analysis to assess data from ophthalmic patient-reported outcome instruments

et al. 2018

View full text Add to dashboard Cite

PurposeTo highlight the potential shortcomings associated with the current use Rasch analysis for validation of ophthalmic questionnaires, and to present an alternative application of Rasch analysis to derive insights specific to the cohort of patients under investigation.MethodsAn alternative application of Rasch analysis was used to investigate the quality of vision (QoV) for a cohort of 481 patients. Patients received multifocal intraocular lenses and completed a QoV questionnaire one and twelve months post-operatively. The rating scale variant of the polytomous Rasch model was utilized. The parameters of the model were estimated using the joint maximum likelihood estimation. Analysis was performed on data at both post-operative assessments, and the outcomes were compared.ResultsThe distribution of the location of symptoms altered between assessments with the most annoyed patients completely differing. One month post-operatively, the most prevalent symptom was starbursts compared to glare at twelve months. The visual discomfort from the most annoyed patients is substantially higher at twelve months. The current most advocated approach for validating questionnaires using Rasch analysis found that the questionnaire was “Rasch-valid” one month post-operatively and “Rasch-invalid” twelve months post-operatively.ConclusionThe proposed alternative application of Rasch analysis to questionnaires can be used as an effective decision support tool at population and individual level. At population level, this new approach enables one to investigate the prevalence of symptoms across different cohorts of patients. At individual level, the new approach enables one to identify patients with poor QoV over time. This study highlights some of the potential shortcomings associated with the current use of Rasch analysis to validate questionnaires.

show abstract

“…Both of the two versions of the LV Prasad-Functional Vision Questionnaire have been developed for children in the developing world [13, 14], and therefore some items have limited applicability in developed countries. The Cardiff Visual Ability Questionnaire for Children and Young People has been developed and tested in a specific geographical area in the United Kingdom (UK), and although translated and validated in Turkish and Chinese [15, 16], its applicability elsewhere is currently limited [17].…”

Section: Introductionmentioning

confidence: 99%

Cross-cultural validation of the Functional Vision Questionnaire for Children and Young People (FVQ_CYP) with visual impairment in the Dutch population: challenges and opportunities

Elsman

Tadić

Peeters

et al. 2019

BMC Med Res Methodol

View full text Add to dashboard Cite

BackgroundTo assess cross-cultural validity between Dutch and English versions of the FVQ_CYP, a patient-reported outcome measure developed in the United Kingdom (UK) for children and adolescents with (severe) visual impairment or blindness (VI for brevity) to measure functional vision.MethodsThe 36-item FVQ_CYP was translated and adapted into Dutch using standard guidelines. The questionnaire was administered to Dutch children and adolescents aged 7–17 years (N = 253) with impaired vision (no restrictions regarding acuity). Data were compared to existing UK data of children and adolescents aged 10–15 years (N = 91) with VI (acuity LogMar worse than 0.48). As with the original UK FVQ_CYP validation, a rating scale model (RSM) was applied to the Dutch data.ResultsMinor adaptations were needed in translation-rounds. Significant differences in item responses were found between the Dutch and UK data. Item response theory assumptions were met, but fit to the RSM was unsatisfactory. Therefore, psychometric properties of the Dutch FVQ_CYP were analysed irrespective of the original model and criteria used. A graded response model led to the removal of 12 items due to missing data, low information, overlapping content and limited relevance to Dutch children. Fit indices for the remaining 24 items were adequate.ConclusionsDifferences in population characteristics, distribution of responses, non-invariance at the model level and small sample sizes challenged the cross-cultural validation process. However, the Dutch adapted FVQ_CYP showed high measurement precision and broad coverage of items measuring children’s functional vision. The underlying reasons for differences between countries in instrument performance are discussed with implications for future studies.

show abstract

Validation of an instrument to assess visual ability in children with visual impairment in China

Cited by 5 publications

References 25 publications

Comprehensive evaluation of functional vision, quality of life, and cognitive ability in pediatric uveitis

Comprehensive evaluation of functional vision, quality of life, and cognitive ability in pediatric uveitis

An alternative application of Rasch analysis to assess data from ophthalmic patient-reported outcome instruments

Cross-cultural validation of the Functional Vision Questionnaire for Children and Young People (FVQ_CYP) with visual impairment in the Dutch population: challenges and opportunities

Contact Info

Product

Resources

About