Evidence map›Paper›PMID 29304040›Full record

Observational studyPloS one2018

Serum selenium levels and the risk of progression of laryngeal cancer.

Jakub Lubiński, Wojciech Marciniak, Magdalena Muszynska, Ewa Jaworowska, Mieczyslaw Sulikowski, Anna Jakubowska, Katarzyna Kaczmarek, Grzegorz Sukiennicki, Michal Falco, Piotr Baszuk and 5 more

Erratum issuedAbstract readObservational Study
In one paragraph

Observational study in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
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

20 citing papers in PubMed.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors.

Jakub LubińskiClinic of Otolaryngology, Pomeranian Medical University, Szczecin, Poland.
Wojciech MarciniakReadGene, Grzepnica, Poland.
Magdalena MuszynskaReadGene, Grzepnica, Poland.
Ewa JaworowskaClinic of Otolaryngology, Pomeranian Medical University, Szczecin, Poland.
Mieczyslaw SulikowskiClinic of Otolaryngology, Pomeranian Medical University, Szczecin, Poland.
Anna JakubowskaReadGene, Grzepnica, Poland.
Katarzyna KaczmarekReadGene, Grzepnica, Poland.
Grzegorz SukiennickiDepartment of Genetics and Pathology, International Hereditary Cancer Center, Pomeranian Medical University, Szczecin, Poland.
Michal FalcoRegional Oncology Centre Szczecin, Szczecin, Poland.
Piotr BaszukReadGene, Grzepnica, Poland.
Magdalena MojsiewiczInstitute of Econometric and Statistics, University of Szczecin, Szczecin, Poland.
Joanne KotsopoulosWomen's College Research Institute, Toronto, Canada.
Ping SunWomen's College Research Institute, Toronto, Canada.
Steven A NarodWomen's College Research Institute, Toronto, Canada.ORCID 0000-0001-5798-0626
Jan A LubińskiReadGene, Grzepnica, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundObservational studies have reported an inverse relationship between selenium status (blood or toenail) and the risk of laryngeal cancer; however, the impact of low serum selenium level on survival has not been evaluated.

methodsWe conducted a prospective study of 296 patients diagnosed with laryngeal cancer in Szczecin, Poland. Serum selenium was measured at diagnosis and prior to treatment. Patients were followed from the date of diagnosis to death at five years. Vital status was obtained by linkage to the Polish National Death Registry.

resultsThe five-year survival after diagnosis was 82.0% (95% CI: 68% to 91%) for individuals in the highest quartile of serum selenium (> 66.8 μg/L) and was 28.6% (95% CI 19% to 42%) for individuals in the lowest quartile (<50.0 μg/L). In an age- and sex-adjusted analysis, the hazard ratio (HR) for death from all causes was 7.01 (95% CI 3.81 to 12.9) for patients in the lowest quartile of serum selenium, compared to those in the highest quartile. The corresponding multivariate HR was 3.07 (95% CI 1.59 to 5.94).

conclusionsThis study suggests that a selenium level in excess of 70 μg/L is associated with improved outcome among patients undergoing treatment for laryngeal cancer. Further studies are needed to evaluate if selenium supplementation to achieve this level might improve overall prognosis.

Indexed as

AdultAgedAged, 80 and overDisease ProgressionFemaleHumansKaplan-Meier EstimateLaryngeal NeoplasmsMaleMiddle AgedPolandProportional Hazards ModelsProspective StudiesRisk FactorsSeleniumSelenium

Identifiers

PMID29304040
PMCPMC5755727

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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.