Evidence map›Paper›PMID 34704791›Full record

ArticleEnvironmental health perspectives2021

Greenness Surrounding Schools and Visual Impairment in Chinese Children and Adolescents.

Bo-Yi Yang, Shanshan Li, Zhiyong Zou, Iana Markevych, Joachim Heinrich, Michael S Bloom, Ya-Na Luo, Wen-Zhong Huang, Xiang Xiao, Zhaohuan Gui and 6 more

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% 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

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

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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

16 authors at 6 institutions in 5 countries.

Bo-Yi YangGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Shanshan LiDepartment of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.
Zhiyong ZouInstitute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China.
Iana MarkevychInstitute of Psychology, Jagiellonian University, Krakow, Poland.
Joachim HeinrichInstitute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, Ludwig-Maximilians-Universität München (LMU) Munich, Munich, Germany.
Michael S BloomDepartment of Global and Community Health, George Mason University, Fairfax, Virginia, USA.
Ya-Na LuoGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Wen-Zhong HuangGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Xiang XiaoGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Zhaohuan GuiDepartment of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Wen-Wen BaoDepartment of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Jin JingDepartment of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Jun MaInstitute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China.
Yinghua MaInstitute of Child and Adolescent Health, School of Public Health, Peking University, Beijing, China.
Yajun ChenDepartment of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Guang-Hui DongGuangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, China.
Sun Yat-sen University · CNPeking University · CNGeorge Mason University · USGerman Center for Lung Research · DEJagiellonian University · PLMonash University · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEvidence concerning the effects of greenness on childhood visual impairment is scarce.

objectivesWe aimed to assess whether greenness surrounding schools was associated with visual impairment prevalence and visual acuity levels in Chinese schoolchildren and whether the associations might be explained by reduced air pollution.

methodsIn September 2013, we recruited 61,995 children and adolescents 6-18 years of age from 94 schools in seven provinces/municipalities in China. Greenness exposure was assessed using the normalized difference vegetation index (NDVI) and the soil-adjusted vegetation index (SAVI) from July to August 2013. Visual impairment was defined as at least one visual acuity level (dimensionless) lower than 4.9 (Snellen 5/6 equivalent). Three-year annual averages of particulate matter (PM) with an aerodynamic diameter of

resultsIn the adjusted model, an interquartile range increase in DISCUSSION: These findings suggest higher greenness surrounding schools might reduce the risk of visual impairment, possibly owing in part to lower

Indexed as

Air PollutantsAir PollutionAdolescentChildChinaHumansNitrogen DioxideParticulate MatterSchoolsVision DisordersAir PollutantsNitrogen DioxideParticulate Matter

Identifiers

PMID34704791
PMCPMC8549527
OpenAlexW3208739232

What OpenQuestion holds

Textmetadata
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.