Evidence map›Paper›PMID 18494834›Full record

ArticleThe American journal of gastroenterology2008

Dietary antioxidants, fruits, and vegetables and the risk of Barrett's esophagus.

Ai Kubo, Theodore R Levin, Gladys Block, Gregory J Rumore, Charles P Quesenberry, Patricia Buffler, Douglas A Corley

Open access · greenAbstract readComparative Study
In one paragraph

Article in The American journal of gastroenterology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 2 pooled it
7.4field-weighted citation impact, top 3% 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

38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 88 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Virulence · 2025
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Global burden and epidemiology of Barrett oesophagus and oesophageal cancer.Nature reviews. Gastroenterology & hepatology · 2021
    Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Oesophageal cancer.Nature reviews. Disease primers · 2017
    Review
  18. 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

7 authors at 1 institution in 1 country.

Ai KuboDivision of Research, Kaiser Permanente, Oakland, California 94612, USA.
Theodore R Levin
Gladys Block
Gregory J Rumore
Charles P Quesenberry
Patricia Buffler
Douglas A Corley
Kaiser Permanente · US

Funding

Epidemiology and Incidence of Barrett's EsophagusR01DK063616 · NIDDK · KAISER FOUNDATION RESEARCH INSTITUTE · PI CORLEY, DOUGLAS ALLEN · 2002 to 2010
$2.6M
ETIOLOGIES/SURVEILLANCE OF BARRETT'S ESOPHAGUSK08DK002697 · NIDDK · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI CORLEY, DOUGLAS ALLEN · 2000 to 2004
$599k
The effects of Diet on Barrett's esophagus and gastroesophageal reflux diseaseF32DK081271 · NIDDK · KAISER FOUNDATION RESEARCH INSTITUTE · PI KUBO, AI · 2008 to 2009
$92k
NIDDK NIH HHS F32 DK081271NIDDK NIH HHS K08 DK002697NIDDK NIH HHS K08DK002697NIDDK NIH HHS R01 DK063616NIDDK NIH HHS R01 DK63616
6 · The paper itself

Abstract

objectiveThe present study evaluated the associations among antioxidants, fruit and vegetable intake, and the risk of Barrett's esophagus (BE), a potential precursor to esophageal adenocarcinoma.

methodsWe conducted a case-control study within the Kaiser Permanente Northern California population. Incident BE cases (N = 296) were matched to persons with gastroesophageal reflux disease (GERD) (GERD controls N = 308) and to population controls (N = 309). Nutrient intake was measured using a validated 110-item food frequency questionnaire. The antioxidant results were stratified by dietary versus total intake of antioxidants.

resultsComparing cases to population controls, dietary intake of vitamin C and beta-carotene were inversely associated with the risk of BE (4th vs 1st quartile, adjusted odds ratio [OR] 0.48, 95% confidence interval [CI] 0.26-0.90; OR 0.56, 95% CI 0.32-0.99, respectively), and the inverse association was strongest for vitamin E (OR 0.25, 95% CI 0.11-0.59). The inverse trends for antioxidant index (total and dietary) and fruit and vegetable intake were statistically significant, while most total intakes were not associated with reduced risk. The use of antioxidant supplements did not influence the risk of BE, and antioxidants and fruits and vegetables were inversely associated with a GERD diagnosis.

conclusionDietary antioxidants, fruits, and vegetables are inversely associated with the risk of BE, while no association was observed for supplement intake. Our results suggest that fruits and vegetables themselves or associated undetected confounders may influence early events in the carcinogenesis of esophageal adenocarcinoma.

Indexed as

DietFruitVegetablesAdolescentAdultAgedAntioxidantsAscorbic AcidBarrett Esophagusbeta CaroteneCase-Control StudiesFemaleGastroesophageal RefluxHumansMaleMiddle AgedAntioxidantsAscorbic Acidbeta CaroteneVitamin E

Identifiers

PMID18494834
PMCPMC2735568
OpenAlexW2159672694

What OpenQuestion holds

Textmetadata
LicenceTDM
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.