Evidence map›Paper›PMID 36592081›Full record

ArticleThe journal of applied laboratory medicine2023

Vitamin C Status of US Adults Assessed as Part of the National Health and Nutrition Examination Survey Remained Unchanged between 2003-2006 and 2017-2018.

Carissa D Powers, Maya R Sternberg, Sweta B Patel, Christine M Pfeiffer, Renee J Storandt, Rosemary L Schleicher

Open access · hybridAbstract read
In one paragraph

Article in The journal of applied laboratory medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 6% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Observational
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. 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 2 institutions in 1 country.

Carissa D PowersCenters for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA.
Maya R SternbergCenters for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA.
Sweta B PatelOak Ridge Institute for Science and Education, Oak Ridge, TN.
Christine M PfeifferCenters for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA.
Renee J StorandtCenters for Disease Control and Prevention, National Center for Health Statistics, Hyattsville, MD.
Rosemary L SchleicherCenters for Disease Control and Prevention, National Center for Environmental Health, Atlanta, GA.ORCID 0000-0002-4520-0749
Centers for Disease Control and Prevention · USOak Ridge Associated Universities · US

Funding

Intramural CDC HHS CC999999
6 · The paper itself

Abstract

backgroundWe compared serum vitamin C (VIC) status of the adult (≥20 y) US population in the National Health and Nutrition Examination Survey (NHANES) 2017-2018 with combined data from 2003-2004 and 2005-2006.

methodsVIC was measured using HPLC with electrochemical detection. Mean data were stratified by age, sex, race/Hispanic origin, income, body mass index, dietary intake, supplement use, and smoking status. Prevalence of VIC deficiency (<11.4 μmol/L) was calculated.

resultsIn NHANES 2017-2018, the mean VIC was 8 μmol/L higher in people ≥60 y compared with those 20-59 y of age, 10 μmol/L lower in men vs women, 8 μmol/L lower in low vs high income, 11 μmol/L lower in obese vs healthy weight, and 15 μmol/L lower in smokers vs nonsmokers. Differences in mean VIC across race/Hispanic origin groups ranged from 2 to 7 μmol/L. Mean VIC was 27 μmol/L higher with vitamin C-containing supplement use and positively associated (Spearman ρ = 0.33; P < 0.0001) with increasing dietary intake. The associations between mean VIC and the investigated covariates were generally consistent and the prevalence of deficiency was not significantly different between survey periods (6.8% vs 7.0%; P = 0.83). However, a few subgroups had double the risk. We found no significant survey differences in mean VIC (51.2 vs 54.0 μmol/L; P = 0.09).

conclusionsOverall VIC status of the US adult population has remained stable since last assessed in the NHANES 2005-2006 survey. Vitamin C deficiency remained high for those with low dietary intake and who smoke.

Indexed as

Ascorbic AcidDietary SupplementsAdultBody Mass IndexChildFemaleHumansMaleNutrition SurveysRacial GroupsAscorbic Acid

Identifiers

PMID36592081
PMCPMC10321475
OpenAlexW4313424328

What Socratic holds

Textmetadata
LicenceTDM
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 Socratic graph.