Evidence map›Paper›PMID 24176134›Full record

ArticleBMC pregnancy and childbirth2013

Vitamin D intake in mid-pregnancy and child allergic disease - a prospective study in 44,825 Danish mother-child pairs.

Ekaterina Maslova, Susanne Hansen, Camilla B Jensen, Andrew L Thorne-Lyman, Marin Strøm, Sjurdur F Olsen

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 pooled it
5.3field-weighted citation impact, top 4% 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

26 citing papers in PubMed, 3 syntheses or guidelines pooled it, 62 citations in OpenAlex.

  1. Dietary factors during pregnancy and atopic outcomes in childhood: A systematic review from the European Academy of Allergy and Clinical Immunology.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2020
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Therapeutic effect of vitamin D supplementation on allergic rhinitis.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2019
    Trial
  6. Trial
  7. Impact of Vitamin D3 Supplementation on Symptom Severity & IgE in Persistent Allergic Rhinitis.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2025
    Article
  8. Review
  9. Review
  10. Article
  11. S3 guideline Allergy Prevention.Allergologie select · 2022
    Article
  12. The Effect of Serum Vitamin D Level on Allergic Rhinitis Symptoms in Children.Pediatric allergy, immunology, and pulmonology · 2021
    Article
  13. 1Journal of immunology research · 2021
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  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

6 authors at 3 institutions in 2 countries.

Ekaterina MaslovaCentre for Fetal Programming, Department of Epidemiology Research, Statens Serum Institut, Artillerivej 5, 2300 Copenhagen, Denmark. kmv@ssi.dk.
Susanne Hansen
Camilla B Jensen
Andrew L Thorne-Lyman
Marin Strøm
Sjurdur F Olsen
Statens Serum Institut · DKColumbia University · USFrederiksberg Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPast studies suggest that maternal vitamin D intake during pregnancy may protect against child wheeze but studies on asthma are limited. Our objective was to examine the relation between intake of vitamin D in mid-pregnancy and child asthma and allergic rhinitis at 18 months and 7 years.

methodsWe examined data from 44,825 women enrolled during pregnancy in the longitudinal Danish National Birth Cohort (1996-2002). We estimated vitamin D intake from diet and supplements based on information from a validated food frequency questionnaire completed in gestational week 25. At 18 months, we evaluated child asthma using data from phone interviews. We assessed asthma and allergic rhinitis by self-report at age 7 and asthma by using records from national registries. Current asthma at age 7 was defined as lifetime asthma diagnosis and wheeze in the past 12 months. We calculated multivariable risk ratios with 95% CIs comparing highest vs. lowest quintile of vitamin D intake in relation to child allergic disease outcomes.

resultsThe median (5%-95%ile) intake of total vitamin D was 11.7(3.0-19.4) μg/day (68% from supplements). In multivariable analysis, mothers in the highest (vs. lowest) quintile of total vitamin D intake were less likely to have children classified with current asthma at 7 years (Q5 vs. Q1: 0.74, 95% CI: 0.56, 0.96, P = 0.02) and they were less likely to have children admitted to the hospital due to asthma (Q5 vs. Q1: 0.80, 95% CI: 0.64, 1.00, P = 0.05). We found no associations with child asthma at 18 months or with allergic rhinitis at 7 years.

conclusionsOur findings suggest a weak inverse relationship between high total vitamin D and asthma outcomes in later, but not early, childhood. The data did not suggest a clear threshold of vitamin D intake above which risk of asthma was reduced.

Indexed as

AdolescentAdultAsthmaChildDenmarkDietDietary SupplementsFemaleHumansInfantLongitudinal StudiesPregnancyPregnancy Trimester, SecondPrenatal Exposure Delayed EffectsPrevalenceProspective StudiesVitamin DVitamins

Identifiers

PMID24176134
PMCPMC3871013
OpenAlexW2158033069

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.