Evidence map›Paper›PMID 32616589›Full record

ArticleThe European respiratory journal2020

Vitamin C to pregnant smokers persistently improves infant airway function to 12 months of age: a randomised trial.

Cindy T McEvoy, Lyndsey E Shorey-Kendrick, Kristin Milner, Diane Schilling, Christina Tiller, Brittany Vuylsteke, Ashley Scherman, Keith Jackson, David M Haas, Julia Harris and 8 more

Registry-linked trialOpen access · bronzeAbstract read
In one paragraph

Article in The European respiratory journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT06106646 (Assessing the Effect of Vitamin C on Infant Lung Function When Given to Pregnant Women Who Smoke -), which is not on this map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 11% 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.

NCT06106646 recruitingnot on this mapstarted 2023, after this paper: background citation

Assessing the Effect of Vitamin C on Infant Lung Function When Given to Pregnant Women Who Smoke - (Long Term Follow-up of a Randomized Trial)

TypeobservationalSponsorOregon Health and Science UniversityRan2023 to 2028Enrolled225ConditionsAsthma, Pulmonary Function, Wheezing, In Utero NicotineArmsNo active intervention in this protocol (previously randomized to Vitamin C), No active intervention in this protocol (previously randomized to Placebo)
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Vitamin A, C and/or E Intake During Pregnancy and Offspring Respiratory Health: A Systematic Review and Meta-Analysis.Journal of human nutrition and dietetics : the official journal of the British Dietetic Association · 2025
    Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Trial
  7. Article
  8. Review
  9. Review
  10. The Role of Vitamins in the Pathogenesis of Asthma.International journal of molecular sciences · 2023
    Review
  11. The Role of Lung Function in Determining Which Children Develop Asthma.The journal of allergy and clinical immunology. In practice · 2023
    Article
  12. Review
  13. Childhood Wheeze Patterns: What Do They Tell Us?American journal of respiratory and critical care medicine · 2022
    Article
  14. Article
  15. Review
  16. 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

18 authors at 6 institutions in 1 country.

Cindy T McEvoyDept of Pediatrics, Oregon Health and Science University, Portland, OR, USA mcevoyc@ohsu.edu.
Lyndsey E Shorey-KendrickDivision of Neuroscience, Oregon National Primate Research Center, Beaverton, OR, USA.
Kristin MilnerDept of Pediatrics, Oregon Health and Science University, Portland, OR, USA.
Diane SchillingDept of Pediatrics, Oregon Health and Science University, Portland, OR, USA.
Christina TillerDept of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA.
Brittany VuylstekeDept of Pediatrics, Oregon Health and Science University, Portland, OR, USA.
Ashley SchermanDept of Pediatrics, Oregon Health and Science University, Portland, OR, USA.
Keith JacksonPeaceHealth Southwest Medical Center, Vancouver, WA, USA.
David M HaasDept of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, IN, USA.
Julia HarrisDept of Pediatrics, Oregon Health and Science University, Portland, OR, USA.
Byung S ParkOregon Health and Science University-Portland State University, School of Public Health and Knight Cancer Institute, Portland, OR, USA.ORCID https://orcid.org/0000-0003-3516-7516
Annette VuDept of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, OR, USA.
Dale F KraemerDept of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, OR, USA.
David GonzalesDivision of Pulmonary and Critical Care Medicine, Oregon Health and Science University, Portland, OR, USA.
Carol BuntenVancouver Clinic, Vancouver, WA, USA.
Eliot R SpindelDivision of Neuroscience, Oregon National Primate Research Center, Beaverton, OR, USA.
Cynthia D MorrisDept of Medical Informatics and Clinical Epidemiology, Oregon Health and Science University, Portland, OR, USA.
Robert S TepperDept of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA.
Oregon Health & Science University · USIndiana University School of MedicineOregon National Primate Research Center · USPortland State University · USSouthwest Washington Medical Center · USVancouver Clinic · US

Funding

Upgrade of confocal microscopy at the Oregon National Primate Research CenterP51OD011092 · OD · OREGON HEALTH & SCIENCE UNIVERSITY · PI Bonnie J. Nagel · 2012 to 2026
$203.9M
Oregon Clinical and Translational Research Institute - The National COVID Cohort Collaborative (N3C)UL1TR002369 · NCATS · OREGON HEALTH & SCIENCE UNIVERSITY · PI Cynthia D Morris, Christopher G. Slatore · 2017 to 2026
$78.4M
Oregon Clinical and Translational Research InstituteUL1TR000128 · NCATS · OREGON HEALTH & SCIENCE UNIVERSITY · PI ELLISON, DAVID H · 2012 to 2015
$28.7M
Maternal vitamin C supplementation to decrease effects of smoking during pregnancy on infant lung function and health:Follow-up of 2 randomized trials and association with changes in DNA methylationUH3OD023288 · OD · OREGON HEALTH & SCIENCE UNIVERSITY · PI Cynthia T McEvoy, ELIOT R SPINDEL · 2018 to 2026
$12.1M
VitC to Decrease Effects of Smoking in Pregnancy on Infant Lung Function-CCC-LeadR01HL105447 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI MCEVOY, CYNTHIA T · 2012 to 2021
$9.8M
VitC to Decrease Effects of Smoking in Pregnancy on Infant Lung Function-DCCR01HL105460 · NHLBI · OREGON HEALTH & SCIENCE UNIVERSITY · PI MORRIS, CYNTHIA D · 2012 to 2021
$2.4M
NCATS NIH HHS UL1 TR000128NCATS NIH HHS UL1 TR002369NHLBI NIH HHS R01 HL105447NHLBI NIH HHS R01 HL105460NIH HHS P51 OD011092NIH HHS UH3 OD023288
6 · The paper itself

Abstract

backgroundVitamin C (500 mg·day

objectiveTo assess whether vitamin C supplementation to pregnant smokers is associated with a sustained increased airway function in their infants through 12 months of age.

methodsThis is a pre-specified secondary outcome of a randomised, double-blind, placebo-controlled trial that randomised 251 pregnant smokers between 13 and 23 weeks of gestation: 125 to 500 mg·day

resultsFEFs were performed in 222 infants at 3 months and 202 infants at 12 months of age. The infants allocated to vitamin C had significantly increased FEFs over the first year of life compared to those allocated to placebo. The overall increased flows were 40.2 mL·s

conclusionsIn offspring of pregnant smokers randomised to vitamin C

Identifiers

PMID32616589
PMCPMC8029653
OpenAlexW3038348743

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

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.