Evidence map›Paper›PMID 35958863›Full record

ArticleFrontiers in public health2022

Prevalence of myopia: A large-scale population-based study among children and adolescents in weifang, china.

Jie Zhang, Zhenhua Li, Jiantao Ren, Wenting Wang, Jiazhen Dai, Cong Li, Xudong Huang, Xianyong Sun, Lei Liu, Chunping Wang

Open access · goldAbstract read
In one paragraph

Article in Frontiers in public health, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 3 pooled it
9.0field-weighted citation impact, top 1% 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

42 citing papers in PubMed, 3 syntheses or guidelines pooled it, 60 citations in OpenAlex.

  1. Pooled it
  2. Association between sleep and myopia in children and adolescents: a systematic review and meta-analysis.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Pooled it
  3. Pooled it
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  5. [A population-based survey of myopia on primary school students in an administrative district, 2019 to 2024].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2026
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  12. Influence of time-of-day and light wavelengths on ocular responses to defocus.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 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

10 authors at 3 institutions in 1 country.

Jie ZhangDepartment of Environmental Hygiene, School of Public Health, Weifang Medical University, Weifang, China.
Zhenhua LiDepartment of Environmental Hygiene, School of Public Health, Weifang Medical University, Weifang, China.
Jiantao RenDepartment of Ophthalmology, Weifang Eye Hospital, Weifang, China.
Wenting WangDepartment of Ophthalmology, Weifang Eye Hospital, Weifang, China.
Jiazhen DaiDepartment of Ophthalmology, Weifang Eye Hospital, Weifang, China.
Cong LiDepartment of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.
Xudong HuangDepartment of Ophthalmology, Weifang Eye Hospital, Weifang, China.
Xianyong SunDepartment of Ophthalmology, Weifang Eye Hospital, Weifang, China.
Lei LiuDepartment of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China.
Chunping WangDepartment of Environmental Hygiene, School of Public Health, Weifang Medical University, Weifang, China.
Weifang People's Hospital · CNWeifang Medical University · CNGuangdong Provincial People's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: This study aimed to determine the prevalence of myopia among school-aged children and adolescents at the whole city level of Weifang, China. Methods: This study was a large scale school-based cross-sectional study among children and adolescents aged 5-20 years old. Participants were selected by the school-based registration system in 2020. All the subjects underwent spherical equivalent (SE) error with non-cycloplegic autorefraction measurement. Myopia was defined as an SE refraction of ≤-0.75 diopters (D) and graded into low myopia (-0.75 to -3.00 D), moderate myopia (-3.01 to -5.99 D), and high myopia (≤-6.00 D). Results: A total of 1,059,838 participants were eligible for this survey and 1,013,206 (95.6% participation rate) were selected through data quality control, which comprised 17 districts/counties and 1,254 schools, including 861 elementary schools, 313 middle schools, and 80 high schools. The mean age of participants was 11.57 ± 3.36 years (5-20 years), and the male-to-female ratio was 1.11. The whole city-level prevalence of total myopia was 75.35%. The prevalence of total myopia among the students in the Hanting District was 45.47%, but ≈82.37% of students living in Changyi have myopia. The overall prevalence of low myopia in elementary, middle, and high school students was 48.56, 47.30, and 31.62%, respectively, while high myopia (SE ≤ -6.00 D) prevalence was 1.12, 8.89, and 20.12%, respectively. The overall prevalence of myopia increased fastest in children aged 7-9 years old. The prevalence of high myopia was 7.59% for girls and 6.43% for boys, respectively ( Conclusions: The current investigation demonstrated a high proportion of myopia among school students in the city of Weifang, and gradually increased with age, and the prevalence of myopia was the highest in Changyi areas. The high myopia prevalence for girls was higher than that in boys.

Indexed as

MyopiaAdolescentAdultChildChild, PreschoolChinaCross-Sectional StudiesFemaleHumansMalePrevalenceRefraction, OcularYoung Adultcross-sectional studieslarge scalemyopiaprevalencestudents

Identifiers

PMID35958863
PMCPMC9358211
OpenAlexW4287218798

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.