Evidence map›Paper›PMID 23873035›Full record

ArticleOptometry and vision science : official publication of the American Academy of Optometry2013

Interpretation of low-vision rehabilitation outcome measures.

Robert W Massof, Joan A Stelmack

Abstract read
In one paragraph

Article in Optometry and vision science : official publication of the American Academy of Optometry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–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

14 citing papers in PubMed.

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  14. Responsiveness of the Revised Low Vision Independence Measure (LVIM-R).The American journal of occupational therapy : official publication of the American Occupational Therapy Association
    Observational
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.

Robert W MassofLions Vision Research and Rehabilitation Center, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA. bmassof@jhmi.edu
Joan A Stelmack

Funding

Comparative studies of low vision rehabilitation outcome measuresR01EY022322 · NEI · JOHNS HOPKINS UNIVERSITY · PI MASSOF, ROBERT W. · 2012 to 2016
$2.0M
NEI NIH HHS EY022322NEI NIH HHS R01 EY022322
6 · The paper itself

Abstract

purposeThis article presents a theoretical interpretation of patient-reported outcomes of low-vision rehabilitation (LVR) using rating scale questionnaires and uses previously published results of LVR outcome studies to illustrate theoretical points and validate assumptions. THEORY: Patients' judgments of the difficulty they have performing tasks are interpreted as magnitude estimates of their functional reserve for each task, which is the difference between their visual ability and the visual ability demanded by the task. We assume that improvements in functional reserve can occur by increasing the patient's visual ability with medical, surgical, or refractive interventions or decreasing the visual ability demanded by the item with activity-specific vision assistive equipment, adaptations, and environmental modifications. Activity-specific interventions cause differential item functioning (intervention-related DIF). Intervention-related DIF makes the measured size of the treatment effect dependent on the item content and the mix of responsive and unresponsive items to intervention.

conclusionsBecause intervention-related DIF depends on the choice of items, the outcome measure selected should be appropriate to the aims of the intervention and the impairment level of the sample to demonstrate the full effects of an intervention. Items that are given extreme positive ratings at preintervention baseline (e.g., "not difficult") have no room for improvement. These items must also be filtered out because they will dilute the measured effect of the activity-specific interventions of LVR.

Indexed as

Sickness Impact ProfileSurveys and QuestionnairesActivities of Daily LivingHealth StatusHumansOutcome Assessment, Health CareQuality of LifeTreatment OutcomeVision, Low

Identifiers

PMID23873035
PMCPMC6166876

What OpenQuestion holds

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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.