Cited by 438Antioxidant Activity and Oxidative StressVitamin C and Antioxidants ResearchAdvanced Causal Inference Techniques

Those confounded vitamins: what can we learn from the differences between observational versus randomised trial evidence?

Lawlor, Debbie A, Smith, George Davey, Bruckdorfer, K Richard, Kundu, Devi, Ebrahim, Shah·2004·The Lancet

Integrity signals

Registry

Crossref · 10.1016/s0140-6736(04)16260-0

Cites

21 of 21 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lawlor, D. A., Smith, G. D., Bruckdorfer, K. R., Kundu, D., & Ebrahim, S.
Affiliations
  • University of Bristol (GB)
  • University of London (GB)
Corresponding author
Lawlor, Debbie A
Venue
The Lancet
Publisher
Elsevier BV
Published
2004-05
Volume
363
Issue
9422
Pages
1724-1727
ISSN
  • 0099-5355 (ISSN-L)
  • 0140-6736
OpenAlex
W2158304798
Cited by
438
References
21
Citations by year
2026: 2 · 2025: 16 · 2024: 13 · 2023: 23 · 2022: 16 · 2021: 18 · 2020: 13 · 2019: 10 · 2018: 17 · 2017: 4 · 2016: 25 · 2015: 18 · 2014: 18 · 2013: 13 · 2012: 19
FWCI
23.12
Type
journal article
Language
en
Open access
closed
Locations
  • The Lancet (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Topics
  • Health Sciences › Medicine › Biochemistry › Antioxidant Activity and Oxidative Stress
  • Health Sciences › Nursing › Nutrition and Dietetics › Vitamin C and Antioxidants Research
  • Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
Keywords
antioxidant vitamins, vitamin C supplementation, observational studies, randomized controlled trials, cardiovascular disease, cancer, all-cause mortality, vitamin supplementation, evidence synthesis
MeSH terms
Anthropometry, Antioxidants, Ascorbic Acid, Cardiovascular Diseases, Humans, Life Style, Research Design, Socioeconomic Factors, Health Behavior, Causality, Confounding Factors, Epidemiologic, Randomized Controlled Trials as Topic, Observation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review