Evidence map›Paper›PMID 36600934›Full record

ArticleFrontiers in public health2022

Increasing prevalence of myopia and the impact of education in primary-school students in Xi'an, north-western of China.

Lu Ye, Yan-Qi Yang, Guo-Yun Zhang, Wen-Jun Wang, Mei-Xia Ren, Pan Ge, Jian Zhang, Nan Zhang, Xing-Zhou Liu, Ming-Lei Zhang and 5 more

Abstract 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 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
–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

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Observational
  3. Article
  4. Article
  5. Article
  6. Article
  7. Progression of myopia among school-aged children in Guangzhou, China.International journal of ophthalmology · 2025
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. 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

15 authors.

Lu YeHealth Science Center, Xi'an Jiaotong University, Xi'an, China.
Yan-Qi YangDepartment of Pathology, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
Guo-Yun ZhangShaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, China.
Wen-Jun WangShaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, China.
Mei-Xia RenShaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Xi'an, China.
Pan GeDepartment of Pathology, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
Jian ZhangDepartment of Pathology, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
Nan ZhangDepartment of Pathology, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
Xing-Zhou LiuHealth Science Center, Xi'an Jiaotong University, Xi'an, China.
Ming-Lei ZhangHealth Science Center, Xi'an Jiaotong University, Xi'an, China.
Yu-Jiao TongHealth Science Center, Xi'an Jiaotong University, Xi'an, China.
Liang-Cai LuHealth Science Center, Xi'an Jiaotong University, Xi'an, China.
Mo-Qi LvDepartment of Pathology, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
Dang-Xia ZhouDepartment of Pathology, School of Basic Medical Sciences, Health Science Center, Xi'an Jiaotong University, Xi'an, China.
Cheng PeiDepartment of Ophthalmology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: The present study was performed to detect the prevalence of myopia among primary-school students in Xi'an, north-western of China. Methods: The present study was a school-based study with students aged from 6 to 13 years old. All the individuals underwent ophthalmological examination and spherical equivalent (SE) of refractive error were measured with non-cycloplegic refraction. Myopia was defined as a SE of ≤ -0.5 diopters (D), and further divided into three stratified groups based on SE: low myopia (≤ -0.5 to >-3.0 D), moderate myopia (≤ -3.0 to >-6.0 D), and high myopia (≤ -6.0 D). Relative risk factors, including age, sex, grade and ethnicity were investigated using questionnaire. Results: A total of 4,680 individuals were eligible for this survey and 4,654 (99.4% participation rate) were finally included (51.2% boys). The mean age of participants was 8.756 ± 1.727 years. The whole city-level prevalence of total myopia was 57.1% (95% CI: 55.7-58.6%). Additionally, the prevalence of low, moderate, and high myopia was 45.0% (95% CI: 43.5-46.4%), 11.1% (95% CI: 10.2-12.0%), and 1.0% (95% CI: 0.7-1.3%), respectively. Moreover, grade (education level) instead of age, sex and ethnicity was the most essential risk factor for prevalence of overall myopia (OR = 1.844, 95% CI: 1.605-2.119), and an increase of prevalence by 84.4% per grade was seen. Furthermore, similar associations of grade were significant with low myopia (OR = 1.613, 95% CI: 1.385-1.877) and moderate myopia (OR = 2.186, 95% CI: 1.693-2.823), meanwhile, prevalence of low myopia and moderate myopia demonstrated an increase of prevalence by 61.3 and 118.6% per grade, respectively. None of the factors included in the present study was significant risk factor for high myopia. Conclusions: The present study investigated a non-negligible high prevalence of myopia among primary-school students in Xi'an, north-western of China, and a gradual increasing in proportion with education level.

Indexed as

MyopiaAdolescentChildChinaEducational StatusFemaleHumansMalePrevalenceStudentscross-sectional studiesmyopianorth-western Chinaprevalenceprimary schoolXi'an city

Identifiers

PMID36600934
PMCPMC9806175

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.