Evidence map›Paper›PMID 29378607›Full record

ArticleHealth and quality of life outcomes2018

Development of a rapid point-of-care patient reported outcome measure for cataract surgery in India.

Joshua R Ehrlich, Charlie Frank, Josiah Smiley, Hong-Gam Le, Sanil Joseph, Stephen G Schilling, Brian C Stagg, Joshua D Stein, R D Ravindran, Aravind Haripriya

Open access · goldAbstract readValidation Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Health and quality of life outcomes, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.3field-weighted citation impact, top 39% of its field
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

3 citing papers in PubMed, 3 citations in OpenAlex.

  1. Article
  2. Article
  3. Implementation of PROMISPatient related outcome measures · 2021
    Article
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

10 authors at 2 institutions in 2 countries.

Joshua R EhrlichDepartment of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48103, USA. joshre@med.umich.edu.
Charlie FrankDepartment of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48103, USA.
Josiah SmileyDepartment of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48103, USA.
Hong-Gam LeDepartment of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48103, USA.
Sanil JosephLions Aravind Institute of Community Ophthalmology, Aravind Eye Care System, Madurai, Tamil Nadu, India.
Stephen G SchillingInstitute for Social Research, University of Michigan, Ann Arbor, MI, USA.
Brian C StaggDepartment of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48103, USA.
Joshua D SteinDepartment of Ophthalmology and Visual Sciences, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48103, USA.
R D RavindranAravind Eye Care System, Madurai, Tamil Nadu, India.
Aravind HaripriyaAravind Eye Care System, Madurai, Tamil Nadu, India.
University of Michigan–Ann Arbor · USAravind Eye Hospital · IN

Funding

Addressing Low Vision due to Severe Peripheral Field Loss: Development and Validation of a Patient-Centered Outcome MeasureK23EY027848 · NEI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI EHRLICH, JOSHUA ROBERT · 2017 to 2021
$1.2M
Heed Ophthalmic Foundation (US) n/aNational Eye Institute K23EY027848NEI NIH HHS K23 EY027848Summer Biomedical Research Program, University of Michigan n/a
6 · The paper itself

Abstract

backgroundFor patient undergoing cataract surgery in India, existing patient-reported outcome (PRO) measures are either not culturally relevant, have not been adequately validated, or are too long to be used in a busy clinical setting. We sought to develop and validate a brief and culturally relevant point-of-care PRO measure to address this need.

methodsTwelve items from the Indian Visual Functioning Questionnaire (IND-VFQ) were selected based on preliminary data. Patients 18 years and older were prospectively recruited at Aravind Eye Care System in Madurai, India. Clinical and sociodemographic data were collected and the 12-item short-form IND-VFQ (SF-IND-VFQ) was administered pre- and post-operatively to 225 patients; Factor analysis and Rasch modeling was performed to assess its psychometric properties.

resultsOne item that did not fit a unidimensional scale and had poor fit with the Rasch model was eliminated from the questionnaire. The remaining 11 items represented a single construct (no residual correlations> 0.1) and were largely unaffected by differential item functioning. Five items had disordered thresholds resolved by collapsing the response scale from four to three categories. The survey had adequate reliability (0.80) and good construct (infit range, 0.77-1.29; outfit range, 0.56-1.30) and content (item separation index, 5.87 logits) validity. Measurement precision was fair (person separation index, 1.97). There was evidence that items were not optimally targeted to patients' visual ability (preoperatively, - 1.92 logits; overall, - 3.41 logits), though the survey measured a very large effect (Cohen's d 1.80). In a subset of patients, the average time to complete the questionnaire was 2 min 6.3 s.

conclusionsThe SF-IND-VFQ is a valid, reliable, sensitive, and rapidly administered point-of-care PRO measure to assess changes in visual functioning in patients undergoing cataract surgery in India.

Indexed as

Cataract ExtractionPatient Reported Outcome MeasuresQuality of LifeAgedFemaleHumansIndiaMaleMiddle AgedPoint-of-Care SystemsPostoperative PeriodProspective StudiesPsychometricsReproducibility of ResultsCataractOphthalmologyPatient-reported outcome measuresRasch analysis

Identifiers

PMID29378607
PMCPMC5789621
OpenAlexW2787107549

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.