Evidence map›Paper›PMID 27400803›Full record

ArticleBMC cancer2016

Total antioxidant intake and prostate cancer in the Cancer of the Prostate in Sweden (CAPS) study. A case control study.

Kjell M Russnes, Elisabeth Möller, Kathryn M Wilson, Monica Carlsen, Rune Blomhoff, Sigbjørn Smeland, Hans-Olov Adami, Henrik Grönberg, Lorelei A Mucci, Katarina Bälter

Open access · goldAbstract readComparative Study
In one paragraph

Article in BMC cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 8% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

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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

10 authors at 4 institutions in 3 countries.

Kjell M RussnesOslo University Hospital, Clinic of Cancer, Surgery and Transplantation, Montebello, 0380, Oslo, Norway. k.m.russnes@medisin.uio.no.ORCID 0000-0001-6730-6192
Elisabeth MöllerDepartment of Medical Epidemiology and Biostatistics, Karolinska Institute, 17177, Stockholm, Sweden.
Kathryn M WilsonDepartment of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.
Monica CarlsenDepartment of Nutrition, Institute for Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway.
Rune BlomhoffOslo University Hospital, Clinic of Cancer, Surgery and Transplantation, Montebello, 0380, Oslo, Norway.
Sigbjørn SmelandDepartment of Nutrition, Institute for Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway.
Hans-Olov AdamiDepartment of Medical Epidemiology and Biostatistics, Karolinska Institute, 17177, Stockholm, Sweden.
Henrik GrönbergDepartment of Medical Epidemiology and Biostatistics, Karolinska Institute, 17177, Stockholm, Sweden.
Lorelei A MucciDepartment of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA, 02115, USA.
Katarina BälterDepartment of Medical Epidemiology and Biostatistics, Karolinska Institute, 17177, Stockholm, Sweden.
Karolinska Institutet · SEHarvard University · USOslo University Hospital · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe total intake of dietary antioxidants may reduce prostate cancer risk but available data are sparse and the possible role of supplements unclear. We investigated the potential association between total and dietary antioxidant intake and prostate cancer in a Swedish population.

methodsWe used FFQ data from 1499 cases and 1112 controls in the population based case-control study Cancer of the Prostate in Sweden (CAPS). The ferric reducing antioxidant potential (FRAP) assay was used to assess the total antioxidant capacity (TAC) of diet and supplements. We calculated odds ratios (ORs) for the risk of prostate cancer across quintiles of antioxidant intake from all foods, from fruit and vegetables only, and from dietary supplements using unconditional logistic regression.

resultsCoffee comprised 62 % of the dietary antioxidant intake, tea 4 %, berries 4 %, chocolate 2 %, and boiled potatoes 2 %. In total 19 % and 13 % of the population took multivitamins and supplemental Vitamin C respectively, on a regular basis. Antioxidant intake from all foods and from fruits and vegetables separately measured by the FRAP assay was not associated with prostate cancer risk. For antioxidant intake from supplements we found a positive association with total, advanced, localized, high grade and low grade prostate cancer in those above median supplemental TAC intake of users compared to non-users (Adjusted ORs for total prostate cancer: 1.37, 95 % CI 1.08-1.73, advanced: 1.51, 95 % CI 1.11-2.06, localized: 1.36. 95 % CI 1.06-1.76, high grade 1.60, 95 % CI 1.06-2.40, low grade 1.36, 95 % CI 1.03-1.81). A high intake of coffee (≥6 cups/day) was associated with a possible risk reduction of fatal and significantly with reduced risk for high grade prostate cancer, adjusted OR: 0.45 (95 % CI: 0.22-0.90), whereas a high intake of chocolate was positively associated with risk of total, advanced, localized and low grade disease (adjusted OR for total: 1.43, 95 % CI 1.12-1.82, advanced: 1.40, 95 % CI 1.01-1.96, localized: 1.43, 95 % CI 1.08-1.88, low-grade: 1.41, 95 % CI 1.03-1.93).

conclusionsTotal antioxidant intake from diet was not associated with prostate cancer risk. Supplement use may be associated with greater risk of disease.

Indexed as

DietDietary SupplementsFeeding BehaviorAgedAntioxidantsCase-Control StudiesFruitHumansLogistic ModelsMaleMiddle AgedNeoplasm GradingNeoplasm StagingOdds RatioProstatic NeoplasmsRisk FactorsAntioxidantsAntioxidantsCoffeeDietary supplementProstate cancer

Identifiers

PMID27400803
PMCPMC4939657
OpenAlexW2474971967

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.