Evidence map›Paper›PMID 24641590›Full record

ArticleAlimentary pharmacology & therapeutics2014

Higher plasma vitamin D is associated with reduced risk of Clostridium difficile infection in patients with inflammatory bowel diseases.

A N Ananthakrishnan, A Cagan, V S Gainer, S-C Cheng, T Cai, P Szolovits, S Y Shaw, S Churchill, E W Karlson, S N Murphy and 2 more

Open access · bronzeAbstract readMulticenter Study
In one paragraph

Article in Alimentary pharmacology & therapeutics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 3 pooled it
5.6field-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

40 citing papers in PubMed, 3 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Diet and inflammatory bowel disease: The Asian Working Group guidelines.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2019
    Guideline
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Serum 25-hydroxyvitamin D levels andArchives of medical science : AMS · 2026
    Article
  7. Review
  8. Global Patterns ofCrohn's & colitis 360 · 2025
    Article
  9. A nomogram for predicting the risk ofFrontiers in pediatrics · 2025
    Article
  10. Article
  11. Serum Vitamin D Level and Gut Microbiota in Women.Healthcare (Basel, Switzerland) · 2023
    Article
  12. Review
  13. Vitamin DAutophagy · 2022
    Article
  14. Review
  15. Article
  16. Difference in Vitamin D Levels Between Children withPediatric gastroenterology, hepatology & nutrition · 2021
    Article
  17. Review
  18. Review
  19. Article
  20. 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

12 authors at 5 institutions in 1 country.

A N AnanthakrishnanDivision of Gastroenterology, Massachusetts General Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
A Cagan
V S Gainer
S-C Cheng
T Cai
P Szolovits
S Y Shaw
S Churchill
E W Karlson
S N Murphy
I Kohane
K P Liao
Harvard University · USMass General Brigham · USBoston Children's Museum · USBrigham and Women's Hospital · USMassachusetts Institute of Technology · US

Funding

Informatics for Integrating Biology/ the Bedside (RMI)U54LM008748 · NLM · BRIGHAM AND WOMEN'S HOSPITAL · PI KOHANE, ISAAC S. · 2004 to 2013
$39.0M
Pilot & Feasibility ProgramP30DK043351 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI Ramnik J Xavier · 1991 to 2026
$35.3M
Trial of risk mangement for prevention of accelerated atherosclerosis in SLEP60AR047782 · NIAMS · BRIGHAM AND WOMEN'S HOSPITAL · PI LOSINA, ELENA · 2001 to 2016
$18.8M
Novel Biomarkers and Prediction Models for Rheumatoid ArthritisR01AR049880 · NIAMS · BRIGHAM AND WOMEN'S HOSPITAL · PI COSTENBADER, KAREN H, KARLSON, ELIZABETH W · 2003 to 2018
$8.7M
Genetic Predictors of Early Atherosclerosis in SLEK24AR052403 · NIAMS · BRIGHAM AND WOMEN'S HOSPITAL · PI KARLSON, ELIZABETH W · 2005 to 2014
$1.5M
Genetic predictors of anti-TNF treatment response and infections in IBDK23DK097142 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI ANANTHAKRISHNAN, ASHWIN N · 2012 to 2016
$846k
Genetic Risk Factors for Coronary Artery Disease in Rheumatoid ArthritisK08AR060257 · NIAMS · BRIGHAM AND WOMEN'S HOSPITAL · PI LIAO, KATHERINE PHOENIX · 2011 to 2015
$649k
NIAMS NIH HHS K08 AR060257NIAMS NIH HHS K24 AR052403NIAMS NIH HHS P60 AR047782NIAMS NIH HHS R01 AR049880NIDDK NIH HHS K23 DK097142NIDDK NIH HHS P30 DK043351NLM NIH HHS U54 LM008748NLM NIH HHS U54-LM008748
6 · The paper itself

Abstract

backgroundPatients with inflammatory bowel diseases (IBD) have an increased risk of clostridium difficile infection (CDI). Cathelicidins are anti-microbial peptides that attenuate colitis and inhibit the effect of clostridial toxins. Plasma calcifediol [25(OH)D] stimulates production of cathelicidins.

aimTo examine the association between plasma 25(OH)D and CDI in patients with IBD.

methodsFrom a multi-institutional IBD cohort, we identified patients with at least one measured plasma 25(OH)D. Our primary outcome was development of CDI. Multivariate logistic regression models adjusting for potential confounders were used to identify independent effect of plasma 25(OH)D on risk of CDI.

resultsWe studied 3188 IBD patients of whom 35 patients developed CDI. Patients with CDI-IBD were older and had greater co-morbidity. The mean plasma 25(OH)D level was significantly lower in patients who developed CDI (20.4 ng/mL) compared to non-CDI-IBD patients (27.1 ng/mL) (P = 0.002). On multivariate analysis, each 1 ng/mL increase in plasma 25(OH)D was associated with a 4% reduction in risk of CDI (OR 0.96, 95% CI 0.93-0.99, P = 0.046). Compared to individuals with vitamin D >20 ng/mL, patients with levels <20 ng/mL were more likely to develop CDI (OR 2.27, 95% CI 1.16-4.44). The mean plasma 25(OH)D in patients with CDI who subsequently died was significantly lower (12.8 ± 8.1 ng/mL) compared to those who were alive at the end of follow-up (24.3 ± 13.2 ng/mL) (P = 0.01).

conclusionsHigher plasma calcifediol [25(OH)D] is associated with reduced risk of C. difficile infection in patients with IBD. Further studies of therapeutic supplementation of vitamin D in patients with inflammatory bowel disease and C. difficile infection may be warranted.

Indexed as

AdultAgedClostridioides difficileClostridium InfectionsCohort StudiesFemaleFollow-Up StudiesHumansInflammatory Bowel DiseasesLogistic ModelsMaleMiddle AgedMultivariate AnalysisRiskVitamin D25-hydroxyvitamin DVitamin D

Identifiers

PMID24641590
PMCPMC4187206
OpenAlexW2021635025

What OpenQuestion holds

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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.