Evidence map›Paper›PMID 26729382›Full record

ArticleBMJ open2016

Carbohydrate intake, obesity, metabolic syndrome and cancer risk? A two-part systematic review and meta-analysis protocol to estimate attributability.

B Sartorius, K Sartorius, C Aldous, T E Madiba, C Stefan, T Noakes

Abstract read
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
–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

9 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Novel Insights into the Pathogenesis and Management of the Metabolic Syndrome.Pediatric gastroenterology, hepatology & nutrition · 2020
    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.

B SartoriusDiscipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa University of KwaZulu-Natal Gastrointestinal Cancer Research Centre (GICRC), Durban, KwaZulu-Natal, South Africa.
K SartoriusDiscipline of Public Health Medicine, School of Nursing and Public Health, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa University of KwaZulu-Natal Gastrointestinal Cancer Research Centre (GICRC), Durban, KwaZulu-Natal, South Africa Faculty of Commerce, University of the Witwatersrand, Johannesburg, South Africa.
C AldousUniversity of KwaZulu-Natal Gastrointestinal Cancer Research Centre (GICRC), Durban, KwaZulu-Natal, South Africa School of Clinical Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa.
T E MadibaUniversity of KwaZulu-Natal Gastrointestinal Cancer Research Centre (GICRC), Durban, KwaZulu-Natal, South Africa School of Clinical Medicine, University of KwaZulu-Natal, Durban, KwaZulu-Natal, South Africa.
C StefanUniversity of KwaZulu-Natal Gastrointestinal Cancer Research Centre (GICRC), Durban, KwaZulu-Natal, South Africa South African Medical Research Council, Cape Town, South Africa.
T NoakesDivision of Exercise Science and Sports Medicine, University of Cape Town.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionLinkages between carbohydrates, obesity and cancer continue to demonstrate conflicting results. Evidence suggests inconclusive direct linkages between carbohydrates and specific cancers. Conversely, obesity has been strongly linked to a wide range of cancers. The purpose of the study is to explore linkages between carbohydrate intake and cancer types using a two-step approach. First the study will evaluate the linkages between carbohydrate intake and obesity, potentially stratified by metabolic syndrome status. Second, the estimated attributable fraction of obesity ascribed to carbohydrate intake will be multiplied against obesity attributable fractions for cancer types to give estimated overall attributable fraction for carbohydrate versus cancer type. METHODS AND ANALYSIS: We will perform a comprehensive search to identify all possible published and unpublished studies that have assessed risk factors for obesity including dietary carbohydrate intake. Scientific databases, namely PubMed MEDLINE, EMBASE, EBSCOhost and ISI Web of Science will be searched. Following study selection, paper/data acquisition, and data extraction and synthesis, we will appraise the quality of studies and risk of bias, as well as assess heterogeneity. Meta-weighted attributable fractions of obesity due to carbohydrate intake will be estimated after adjusting for other potential confounding factors (eg, physical inactivity, other dietary intake). Furthermore, previously published systematic reviews assessing the cancer-specific risk associated with obesity will also be drawn. These estimates will be linked with the attributability of carbohydrate intake in part 1 to estimate the cancer-specific burden that can be attributed to dietary carbohydrates. This systematic review protocol has been developed according to the 'Preferred Reporting Items for Systematic review and Meta-Analysis Protocols (PRISMA-P) 2015'. ETHICS AND DISSEMINATION: The current study will be based on published literature and data, and, as such, ethics approval is not required. The final results of this two part systematic review (plus multiplicative calculations) will be published in a relevant international peer-reviewed journal. TRIAL REGISTRATION NUMBER: PROSPERO CRD42015023257.

Indexed as

ComorbidityDietary CarbohydratesHumansMeta-Analysis as TopicMetabolic SyndromeNeoplasmsObesityRisk FactorsSystematic Reviews as TopicDietary CarbohydratesDIABETES & ENDOCRINOLOGYEPIDEMIOLOGYNUTRITION & DIETETICSONCOLOGYPUBLIC HEALTHSTATISTICS & RESEARCH METHODS

Identifiers

PMID26729382
PMCPMC4716256

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.