Evidence map›Paper›PMID 28355301›Full record

SynthesisPloS one2017

Variations of pterygium prevalence by age, gender and geographic characteristics in China: A systematic review and meta-analysis.

Peige Song, Xinlei Chang, Manli Wang, Lin An

Open access · goldAbstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 5 pooled it
4.7field-weighted citation impact, top 5% 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

35 citing papers in PubMed, 5 syntheses or guidelines pooled it, 52 citations in OpenAlex.

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  11. Classification of ocular surface diseases: Deep learning for distinguishing ocular surface squamous neoplasia from pterygium.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025
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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

4 authors at 1 institution in 2 countries.

Peige SongDepartment of Child, Adolescent and Women's Health, School of Public Health, Peking University, Beijing, China.
Xinlei ChangDepartment of Child, Adolescent and Women's Health, School of Public Health, Peking University, Beijing, China.
Manli WangDepartment of Child, Adolescent and Women's Health, School of Public Health, Peking University, Beijing, China.
Lin AnDepartment of Child, Adolescent and Women's Health, School of Public Health, Peking University, Beijing, China.ORCID http://orcid.org/0000-0003-1353-2092
Peking University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPterygium is a common chronic ophthalmic condition, which may result in significant visual morbidity or lead to blindness in extreme cases. The prevalence of pterygium in China has not been reported at the sub-national level.

methodsIn this study, we conducted a systematic review and meta-analysis to estimate the prevalence of pterygium in China. China National Knowledge Infrastructure (CNKI), Wanfang, Chinese Biomedicine Literature Database (CBM-SinoMed), PubMed, Embase and Medline were searched before September 2016. We performed a multilevel mixed-effect meta-regression based on the included studies, our results showed that age, gender and latitude were significantly associated with pterygium prevalence. Based on the final model, the age and gender-specific prevalence of pterygium in 31 Chinese provinces (except Hongkong, Macau and Taiwan) and the whole country was generated.

resultsIn 2010, the overall prevalence of pterygium in Chinese people aged 15-84 years was 9.84% (95% CI: 6.72-14.14), and the number of pterygium cases in China was 108.65 million (95% CI: 74.23-156.13).

conclusionsIn conclusion, the prevalence of pterygium in Chinese population in 2010 was estimated at both the national and provincial levels. The higher burden of pterygium across the country calls for efforts to advocate public health education encouraging people to take appropriate protective measures.

Indexed as

AdolescentAdultAgedAged, 80 and overAge FactorsAsian PeopleChinaFemaleGeographyHumansMaleMiddle AgedMultivariate AnalysisPrevalencePterygiumRegression Analysis

Identifiers

PMID28355301
PMCPMC5371366
OpenAlexW2597919098

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.