Evidence map›Paper›PMID 27990374›Full record

ArticleInternational journal of ophthalmology2016

Trends in ophthalmology journals: a five-year bibliometric analysis (2009-2013).

Christopher B Schulz, Alasdair Kennedy, Ben C Rymer

Abstract read
In one paragraph

Article in International journal of ophthalmology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

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  11. Intraocular lens power calculation formulas: a scientometric analysis.Medical hypothesis, discovery & innovation ophthalmology journal · 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

3 authors.

Christopher B SchulzEye Unit, Royal Bournemouth Hospital, Bournemouth, BH7 7DW, UK.
Alasdair KennedyDepartment of Ophthalmology, Conquest Hospital, St. Leonards-on-Sea, TN37 7RD, UK.
Ben C RymerDepartment of Plastic Surgery, Queen Elizabeth Hospital, Birmingham, B15 2TH, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimTo explore the trends in the ophthalmic literature over a 5-year period in relation to country, research expenditure and demographics.

methodsArticles published between 2009 and 2013 by the 20highest-contributing countries in the 20 top-ranked ophthalmology journals were identified by their country of affiliation. The number of articles published and mean impact factor were measured per country for each year and trends explored using regression analysis with 5-year and 10-year forecasts calculated. Data on research expenditure was collected and tested for correlation with the number of articles and mean impact factor.

resultsThe analysis included 19 338 articles. The USA, UK and Europe accounted for 60.2% of articles published, with the USA contributing 7388 articles (34.0%). The USA also demonstrated the highest mean impact factor (3.5). Research expenditure was significantly correlated with both research output (

conclusionWhile the USA and European countries are major contributors of ophthalmic research, the productivity of some Asian countries is growing impressively. The contribution of China, Korea and India is forecasted to outweigh that of Europe by 2023. Research expenditure is highly correlated with research productivity and these trends reflect the differing economic priorities across the world.

Indexed as

bibliometricsjournal impact factorophthalmology

Identifiers

PMID27990374
PMCPMC5145099

What OpenQuestion holds

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Registered trials

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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.