Evidence map›Paper›PMID 23589794›Full record

ArticleBlood research2013

The prevalence of vitamin D deficiency in iron-deficient and normal children under the age of 24 months.

Hyun Joo Jin, Jun Ho Lee, Moon Kyu Kim

Abstract read
In one paragraph

Article in Blood research, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

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

  1. Pooled it
  2. Iron and Bone Pathophysiology.Advances in experimental medicine and biology · 2025
    Review
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. The Association between Standardized Serum 25-HydroxyvitaminInternational journal of clinical practice · 2022
    Article
  9. Iron and 25-hydroxyvitamin D in postmenopausal women with osteoporosis.American journal of translational research · 2022
    Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Effects of Iron on Vitamin D Metabolism: A Systematic Review.International journal of preventive medicine · 2016
    Review
  19. Vitamin D and anemia: insights into an emerging association.Current opinion in endocrinology, diabetes, and obesity · 2015
    Review
  20. Observational
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.

Hyun Joo JinDepartment of Pediatrics, CHA University School of Medicine, CHA Bundang Medical Center, Seongnam, Korea.
Jun Ho Lee
Moon Kyu Kim

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIron and vitamin D deficiencies cause a variety of health issues in children, which might have long-lasting effects even in asymptomatic cases. The present study sought to elucidate the potential association between iron status and serum vitamin D levels in infants.

methodsWe evaluated 102 infants aged 3-24 months who visited the CHA Bundang Medical Center from August 2010 to July 2011. Questionnaire and laboratory data were collected. The infants were classified into iron deficiency anemia (IDA), iron deficiency (ID), and normal groups according to hemoglobin (Hb) and ferritin levels. They were then classified into vitamin D deficiency (VDD), vitamin D insufficiency (VDI), and vitamin D sufficiency (VDS) groups according to 25-hydroxyvitamin D [25(OH)D] levels.

resultsVDD was present in 67% of IDA, 53% of ID, and 29% of normal subjects. The proportion of breastfed infants was the highest in the IDA (97%) and VDD (96%) groups. The odds ratio for the likelihood of iron-deficient infants to have subnormal vitamin D levels was 4.115. There was a significant correlation between Hb and 25(OH)D levels. Plasma 25(OH)D levels were lower in the winter/spring. Body mass index values were higher in the IDA/ID groups. Iron, age, and season were predictors of 25(OH)D levels.

conclusionThe prevalence of iron and vitamin D deficiency was high in breastfed infants. There was also a significant association between Hb and 25(OH)D levels in infants. Since all breastfed infants should receive vitamin D supplementation, there should also be concern about concurrent deficiencies in infants with IDA.

Indexed as

25(OH)DBreastfeedingIron deficiency anemiaVitamin D deficiency

Identifiers

PMID23589794
PMCPMC3624995

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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.