Evidence map›Paper›PMID 20526224›Full record

ArticleOptometry and vision science : official publication of the American Academy of Optometry2010

Comparison of scoring approaches for the NEI VFQ-25 in low vision.

Bradley E Dougherty, Mark A Bullimore

Abstract readComparative Study
In one paragraph

Article in Optometry and vision science : official publication of the American Academy of Optometry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Gender-specific changes in vision-related quality of life over time - results from the population-based Gutenberg Health Study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
    Observational
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  11. The intraocular implant and visual rehabilitation improve the quality of life of elderly patients with geographic atrophy secondary to age-related macular degeneration.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Bradley E DoughertyOhio State University, College of Optometry, Columbus, Ohio 43210, USA. bdougherty@optometry.osu.edu
Mark A Bullimore

Funding

Short Term Training: Students in Health Professional SchoolsT35EY007151 · NEI · OHIO STATE UNIVERSITY · PI Heather Anne Anderson · 1998 to 2026
$1.2M
Advanced Graduate Training for OptometristsT32EY013359 · NEI · OHIO STATE UNIVERSITY · PI ZADNIK, KARLA · 2001 to 2011
$1.1M
LOW VISION INTERVENTION PLANNING GRANTR21EY011502 · NEI · OHIO STATE UNIVERSITY · PI RAASCH, THOMAS W · 1998 to 1998
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NEI NIH HHS R21 EY011502NEI NIH HHS R21-EY11502NEI NIH HHS T32 EY013359NEI NIH HHS T32-EY013359NEI NIH HHS T35 EY007151NEI NIH HHS T35-EY07151
6 · The paper itself

Abstract

purposeThe aim of this study was to evaluate different approaches to scoring the National Eye Institute Visual Functioning Questionnaire-25 (NEI VFQ-25) in patients with low vision including scoring by the standard method, by Rasch analysis, and by use of an algorithm created by Massof to approximate Rasch person measure. Subscale validity and use of a 7-item short form instrument proposed by Ryan et al. were also investigated.

methodsNEI VFQ-25 data from 50 patients with low vision were analyzed using the standard method of summing Likert-type scores and calculating an overall average, Rasch analysis using Winsteps software, and the Massof algorithm in Excel. Correlations between scores were calculated. Rasch person separation reliability and other indicators were calculated to determine the validity of the subscales and of the 7-item instrument.

resultsScores calculated using all three methods were highly correlated, but evidence of floor and ceiling effects was found with the standard scoring method. None of the subscales investigated proved valid. The 7-item instrument showed acceptable person separation reliability and good targeting and item performance.

conclusionsAlthough standard scores and Rasch scores are highly correlated, Rasch analysis has the advantages of eliminating floor and ceiling effects and producing interval-scaled data. The Massof algorithm for approximation of the Rasch person measure performed well in this group of low-vision patients. The validity of the subscales VFQ-25 should be reconsidered.

Indexed as

National Eye Institute (U.S.)Surveys and QuestionnairesVision, OcularAgedAged, 80 and overAlgorithmsHumansMiddle AgedPrincipal Component AnalysisReproducibility of ResultsUnited StatesVision, Low

Identifiers

PMID20526224
PMCPMC2924616

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.