Evidence map›Paper›PMID 31774115›Full record

SynthesisBioscience reports2019

Association of vitamin E on the risk of ovarian cancer: a meta-analysis.

Youxu Leng, Hairong Zhou, Fanjing Meng, Tian Tian, Jianying Xu, Fengjuan Yan

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Bioscience reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 3 pooled it
2.5field-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.

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

9 citing papers in PubMed, 3 syntheses or guidelines pooled it, 18 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Review
  6. Article
  7. Review
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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.

Youxu LengDepartment of Gynecology, Longhua District Central Hospital, Shenzhen, 518110, Guangdong Province, China.
Hairong ZhouDepartment of General Medical Department, Longhua District Central Hospital, Shenzhen, 518110, Guangdong Province, China.
Fanjing MengDepartment of Gynecology, Longhua District People's Hospital, Shenzhen 518109, Guangdong Province, China.
Tian TianDepartment of Gynecology, Dongguan City Tangxia Hospital, Dongguan 523710, Guangdong Province, China.
Jianying XuDepartment of Gynecology, Dongguan City Tangxia Hospital, Dongguan 523710, Guangdong Province, China.
Fengjuan YanDepartment of General Medical Department, Longhua District Central Hospital, Shenzhen, 518110, Guangdong Province, China.
Longgang Central Hospital · CNTang Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many researches were conducted to assess the association of vitamin E intake on the risk of ovarian cancer, with conflict results. The current meta-analysis of published observational studies aimed to investigate the effect of vitamin E intake on ovarian cancer risk. The summary relative risks (RRs) with corresponding 95% confidence intervals (CIs) were calculated to measure the effectiveness of vitamin E intake on ovarian cancer risk using a random-effects model. As a result, 14 studies including 4597 patients were identified. Eleven studies reported about total vitamin E intake, eight studies about vitamin E intake from food only and five studies about vitamin E intake from supplement only on the risk of ovarian cancer. Overall, the summary RRs on ovarian cancer risk was 0.95 (95%CIs = 0.78-1.16) in total vitamin E intake, 0.99 (95%CIs = 0.77-1.27) in vitamin E intake from food only and 0.82 (95%CIs = 0.54-1.25) in vitamin E intake from supplement only. Results in subgroup analyses by study design and geographic location were consistent with overall result. In conclusions, the findings of this meta-analysis suggested that high intake of vitamin E from food or vitamin E supplement had no significant effect on the risk of ovarian cancer.

Indexed as

Dietary SupplementsEatingOvarian NeoplasmsFemaleHumansRisk FactorsVitamin EVitamin Efoodmeta-analysisovarian cancersupplementvitamin E

Identifiers

PMID31774115
PMCPMC6928519
OpenAlexW2990040374

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.