The development of the Screening of Visual Complaints questionnaire for patients with neurodegenerative disorders: Evaluation of psychometric properties

University of Groningen

The development of the Screening of Visual Complaints questionnaire for patients with neurodegenerative disorders: Evaluation of psychometric properties

Huizinga, Famke; Heutink, Joost; Haan, de, Gera; Lijn, van der, Iris; Feen, van der, Fleur; Vrijling, Anne; Melis-Dankers, Bart; Vries, de, Stefanie; Tucha, Oliver; Koerts, Janneke

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Publication date: 2019

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Citation for published version (APA):

Huizinga, F., Heutink, J., Haan, de, G., Lijn, van der, I., Feen, van der, F., Vrijling, A., Melis-Dankers, B., Vries, de, S., Tucha, O., & Koerts, J. (2019). The development of the Screening of Visual Complaints questionnaire for patients with neurodegenerative disorders: Evaluation of psychometric properties. Poster session presented at 7th scientific meeting of the Federation of the European Societies of

Neuropsychology, Milaan, Italy.

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The Development of the Screening of Visual Complaints Questionnaire

for Patients with Neurodegenerative Disorders: Evaluation of

Psychometric Properties

F. Huizinga

, J. Heutink

, G. A. de Haan

, I. van der Lijn

, F. E. van der Feen

, A. C. L. Vrijling

,

B. J. M. Melis-Dankers

, S. M. de Vries

, O. Tucha

, J. Koerts

Background

Approximately 75% of patients with Parkinson’s disease (PD), 33% of patients with multiple sclerosis (MS) and 50% of early dementia patients tend to

suffer from visual problems1-3_{. Nevertheless, visual}

complaints are little recognized in clinical care and there is a lack of clinical instruments that can be used to assess visual complaints. A 21-item Screening of Visual Complaints (SVC) questionnaire was developed to assess visual complaints in patients with PD, MS or early dementia.

Methods

1,461 healthy Dutch participants (18-95 years) were assessed with:

 Screening of Visual Complaints

questionnaire (SVC)

 Cerebral Visual Disorders

questionnaire (CVS)

 National Eye Institute Visual Function

Questionnaire–25 (VFQ-25)

 Behavior Rating Inventory of Executive

Function-A (BRIEF-A)

Results

• Exploratory and confirmatory factor

analyses resulted in a three-factor

structure (Figure 1):

• Altered visual perception (R2=28.6%)

• Reduced visual perception (R2=7.7%)

• Ocular discomfort (R2=6.8%)

• Sufficient convergent and divergent validity (Figure 2)

• High internal consistency

(Cronbach’s alpha= 0.85) and

test-retest reliability (ICC=0.82)

NAH-Progress

Discussion

The SVC can be used to screen

for the degree of visual

complaints and to define change over time in case of repeated

assessments. Subscale scores

can support a more detailed

evaluation and might guide

further assessment of visual

functioning. The SVC needs

further validation in clinical

groups of patients with PD, MS or early dementia.

VIVIS

Aim

To evaluate the psychometric properties of the SVC in a large community-sample by examining its factor structure,

internal consistency,

convergent and divergent

validity, and test-retest

reliability.

Conclusion

The SVC is a valid and reliable tool for the assessment of subjective visual complaints

in a community-sample and appears

promising for use in clinical practice of patients with PD, MS or early dementia.

Figure 2. Scatterplots of correlations of convergent

validity (A-B) and divergent validity (C-F)

A B C D E F svc svc svc svc svc svc Men tal he alt h (DASS -21) E xecutive fu nct ion (B RIEF -A) Sympt o m validity ( SI MS) A tt e ntio n (FE DA ) CVS V FQ -25 r=0.84 r=-0.71 r=0.26 r=0.34 r=0.40 r=0.29

 Questionnaire for Experiences of

Attention Deficits (FEDA)

Analyses:

• Exploratory (subsample 1; n=730) and confirmatory

factor analyses (subsample 2; n=731) to evaluate the factor structure of the SVC • Correlation analyses to

assess convergent and • Reliability analyses to

evaluate internal consistency and

Figure 1. Factor structure of the SVC Screening of Visual

Complaints questionnaire

test-retest reliability

a University of Groningen, Clinical and Developmental Neuropsychology, Groningen, The Netherlands

b Royal Dutch Visio, Huizen, The Netherlands Contact:

Famke Huizinga f.huizinga@rug.nl

1 Davidsdottir, S., Cronin-Golomb, A., & Lee, A. (2005). Visual and spatial symptoms in Parkinson’s disease. Vision Research, 45(10), 1285–1296.

2 Jasse, L., Vukusic, S., Durand-Dubief, F., Vartin, C., Piras, C., Bernard, M., … Tilikete, C. (2013). Persistent visual impairment in multiple sclerosis: prevalence, mechanisms and resulting disability. Multiple Sclerosis

Journal, 19(12), 1618–1626.

3 Bowen, M., Edgar, D., Hancock, B., Haque, S., Shah, R. et. al. (2016). The Prevalence of Visual Impairment in People with Dementia (the PrOVIDe study): a cross-sectional study of people aged 60–89 years with

dementia and qualitative exploration of individual, carer and professional perspectives. Health Services and Delivery Research, 4(21).

divergent validity

 Structured Inventory for

Malingered Symptomatology (SIMS)

 Depression Anxiety Stress Scale-21