Evidence map›Paper›PMID 32219131›Full record

SynthesisBioMed research international2020

Fruit and Vegetable Intake and the Risk of Chronic Obstructive Pulmonary Disease: A Dose-Response Meta-Analysis of Observational Studies.

Hongrui Zhai, Yu Wang, Wenjie Jiang

Open access · hybridAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in BioMed research international, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
1.9field-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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Association of dietary calcium intake with chronic bronchitis and emphysema.Journal of health, population, and nutrition · 2025
    Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Risk and Protective Factors of COPD Among Smokers: A Cross-Sectional Study Using NHANES Database.International journal of chronic obstructive pulmonary disease · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Diet and COPD: A Gut Feeling About Pathogenesis.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2024
    Article
  19. Article
  20. 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

3 authors at 1 institution in 1 country.

Hongrui ZhaiDepartment of Epidemiology and Health Statistics, School of Public Health, Qingdao University, Qingdao, Shandong 266021, China.ORCID https://orcid.org/0000-0002-9689-2490
Yu WangDepartment of Epidemiology and Health Statistics, School of Public Health, Qingdao University, Qingdao, Shandong 266021, China.ORCID https://orcid.org/0000-0002-9450-8870
Wenjie JiangDepartment of Epidemiology and Health Statistics, School of Public Health, Qingdao University, Qingdao, Shandong 266021, China.ORCID https://orcid.org/0000-0003-3705-3475
Qingdao University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

methodsPubMed, Web of Science, and China National Knowledge Infrastructure (CNKI) were searched for relevant studies published up to September 2019. Combined relative risks (RRs) and 95% confidence intervals (CIs) were calculated with the random effects model (REM). Dose-response relationship was assessed by the restricted cubic spline model.

resultsThere are 8 studies involving 5,787 COPD cases among 244,154 participants included in this meta-analysis. For the highest versus the lowest level, the pooled RR of COPD was 0.75 (95% CI, 0.68-0.84;

conclusionsThis meta-analysis indicates that fruit and vegetable intake might be related to a lower risk of COPD.

Indexed as

DietFruitPulmonary Disease, Chronic ObstructiveVegetablesDatabases, FactualObservational Studies as TopicRisk Factors

Identifiers

PMID32219131
PMCPMC7057001
OpenAlexW3008258581

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.