Evidence map›Paper›PMID 29649072›Full record

ArticleEuropean journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP)2019

A case-control study of risk factors for colorectal cancer in an African population.

Leolin Katsidzira, Innocent T Gangaidzo, Rudo Makunike-Mutasa, Tadios Manyanga, Zvifadzo Matsena-Zingoni, Sandie Thomson, Jonathan A Matenga, Simbarashe Rusakaniko, Raj Ramesar

Abstract read
In one paragraph

Article in European journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing 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

27 citing papers in PubMed.

  1. Article
  2. Emerging trends in the global burden of colorectal cancer.Nature reviews. Clinical oncology · 2026
    Review
  3. Article
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  7. Review
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  19. Article
  20. Cancer in Africa: The Untold Story.Frontiers in oncology · 2021
    Article
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

9 authors.

Leolin KatsidziraDepartments of Medicine.
Innocent T GangaidzoDepartments of Medicine.
Rudo Makunike-MutasaHistopathology.
Tadios ManyangaDepartments of Medicine.
Zvifadzo Matsena-ZingoniNational Institute of Health Research, Harare, Zimbabwe.
Sandie ThomsonDepartment of Medicine, Division of Gastroenterology, University of Cape Town and Groote Schuur Hospital.
Jonathan A MatengaDepartments of Medicine.
Simbarashe RusakanikoCommunity Medicine, College of Health Sciences, University of Zimbabwe.
Raj RamesarMRC/UCT Human Genetics Research Unit, Division of Human Genetics, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa.

Funding

Wellcome Trust
6 · The paper itself

Abstract

The interplay between hereditary and environmental factors in the causation of colorectal cancer in sub-Saharan Africa is poorly understood. We carried out a community based case-control study to identify the risk factors associated with colorectal cancer in Zimbabwe. We recruited 101 cases of colorectal cancer and 202 controls, matched for age, sex and domicile. Potential risk factors including family history, socioeconomic status, urbanization, diabetes mellitus and previous schistosomiasis were evaluated. Conditional logistic regression was used to estimate the odds ratios associated with the different factors. Cases were more likely to have a tertiary education (32.7 vs. 13.4%, P<0.001) and a higher income (18.8 vs. 6.9%, P=0.002). After multivariate analysis, diabetes mellitus [odds ratio (OR): 5.3; 95% confidence interval (CI): 1.4-19.9; P=0.012], previous urban domicile (OR: 2.8; 95% CI: 1.0-7.8; P=0.042), previous schistosomiasis (OR: 2.4; 95% CI: 1.4-4.2; P=0.001) and cancer in a first-degree relative (OR: 2.4; 95% CI: 1.2-4.8; P=0.018) were associated independently with colorectal cancer. Our findings suggest that family history, diabetes mellitus, previous schistosomiasis and approximation to a western lifestyle are the predominant associations with colorectal cancer in Africans. This offers opportunities for targeted prevention and hypothesis-driven research into the aetiology of colorectal cancer in this population.

Indexed as

Black PeopleCase-Control StudiesColorectal NeoplasmsFemaleFollow-Up StudiesHumansLife StyleMaleMiddle AgedPrognosisRisk FactorsZimbabwe

Identifiers

PMID29649072
PMCPMC6076991

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Registered trials

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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.