Evidence map›Paper›PMID 34905815›Full record

ArticleThe Korean journal of internal medicine2022

Helicobacter pylori infection and iron deficiency in non-elderly adults participating in a health check-up program.

Jun Yeop Lee, Sung Eun Kim, Seun Ja Park, Moo In Park, Won Moon, Jae Hyun Kim, Kyoungwon Jung

Open access · goldAbstract read
In one paragraph

Article in The Korean journal of internal medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.2field-weighted citation impact, top 48% 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

7 citing papers in PubMed, 1 citations in OpenAlex.

  1. Article
  2. Research progress on the relationship betweenFrontiers in microbiology · 2025
    Review
  3. Beyond the stomach: the association betweenFrontiers in cellular and infection microbiology · 2025
    Review
  4. Review
  5. Diagnostics (Basel, Switzerland) · 2023
    Article
  6. Article
  7. Review
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.

Jun Yeop LeeDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Sung Eun KimDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Seun Ja ParkDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Moo In ParkDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Won MoonDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Jae Hyun KimDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Kyoungwon JungDepartment of Internal Medicine, Kosin University College of Medicine, Busan, Korea.
Kosin University · KR

Funding

Ministry of Science, ICT and Future PlanningNational Research Foundation of Korea 2017R1C1B5017457
6 · The paper itself

Abstract

BACKGROUND/

aimsHelicobacter pylori infection is presumably associated with iron deficiency and iron deficiency anemia (IDA). This study aimed to evaluate the relationship between H. pylori infection and the decline in iron stores in non-elderly adults during their health check-ups.

methodsWe identified a total of 1,069 subjects who were tested for iron, ferritin, and total iron-binding capacity during their health check-ups, from January 2016 to May 2017. Of these, subjects who underwent endoscopy via rapid urease test and those aged 65 years or below were finally enrolled.

resultsOverall, 281 subjects were enrolled, and 187 patients (66.5%) tested positive for H. pylori. The mean age was 36.1 years (range, 22 to 65), and 176 subjects (62.6%) were male. The mean levels of hemoglobin (14.1 ± 1.7 g/dL vs. 14.6 ± 1.4 g/dL, p = 0.019) and ferritin (121.7 ± 106.9 ng/mL vs. 151.8 ± 107.8 ng/mL, p = 0.027) in the H. pylori-positive group were significantly lower than those in the H. pylori-negative group. Iron deficiency (ferritin < 30 ng/mL) was more common in patients with H. pylori infection (p = 0.002). There was no significant difference in anemia (hemoglobin < 13 g/dL in men, < 12 g/dL in women) or IDA (anemia, ferritin < 10 ng/mL, and transferrin saturation < 16%) with H. pylori. Logistic regression analysis demonstrated that female sex (odds ratio, 197.559; 95% confidence interval, 26.461 to 1,475.015) and H. pylori infection (odds ratio, 3.033; 95% confidence interval, 1.216 to 7.567) were factors associated with iron deficiency.

conclusionH. pylori infection is associated with iron deficiency, suggesting a decline in iron stores among infected non-elderly adults.

Indexed as

AnemiaAnemia, Iron-DeficiencyHelicobacter InfectionsHelicobacter pyloriIron DeficienciesAdultFemaleFerritinsHemoglobinsHumansIronMaleMiddle AgedFerritinsHemoglobinsIronAnemiaAnemia, iron-deficiencyFerritinsHelicobacter pyloriHemoglobins

Identifiers

PMID34905815
PMCPMC8925964
OpenAlexW3162630317

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.