Evidence map›Paper›PMID 31528185›Full record

ArticleNutrition & metabolism2019

Association between coffee consumption and risk of bladder cancer in a meta-analysis of 16 prospective studies.

Zhi-Wei Dai, Ke-Dan Cai, Fu-Rong Li, Xian-Bo Wu, Guo-Chong Chen

Open access · goldAbstract read
In one paragraph

Article in Nutrition & metabolism, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 2 pooled it
1.7field-weighted citation impact, top 17% 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

12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.

  1. Bladder cancer risk factors: a comprehensive umbrella review of meta-analyses.International journal of surgery (London, England) · 2026
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  12. Mutational Landscape and Environmental Effects in Bladder Cancer.International journal of molecular sciences · 2020
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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

5 authors at 3 institutions in 2 countries.

Zhi-Wei DaiDepartment of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315010 China.
Ke-Dan CaiDepartment of Nephrology, HwaMei Hospital, University of Chinese Academy of Sciences, Ningbo, 315010 China.
Fu-Rong Li2Department of Epidemiology, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, 510000 China.
Xian-Bo Wu2Department of Epidemiology, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), Guangzhou, 510000 China.
Guo-Chong Chen3Department of Epidemiology and Population Health, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461 USA.ORCID 0000-0003-1853-6244
Ningbo No. 2 Hospital · CNSouthern Medical University · CNAlbert Einstein College of Medicine · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCurrent evidence remains equivocal as to whether and how consumption of coffee may be associated with risk of bladder cancer, and potential influence of confounding by smoking on this association is yet to be elucidated. We conducted an updated meta-analysis of prospective studies to address these issues.

methodsRelevant studies were identified by searching PubMed and EMBASE databases from inception to April 2019. A random-effects model was used to estimate summary relative risk (RR) with corresponding 95% confidence interval (CI) of bladder cancer associated with coffee consumption.

resultsThe final analysis included 16 prospective studies comprising 2,122,816 participants and 11,848 bladder cancer cases. Overall, coffee consumption was not associated with risk of bladder cancer (RR

conclusionBest evidence available to date does not support an independent association between coffee consumption and bladder cancer risk. Some direct associations observed in individual studies may be a result of residual confounding by smoking. SUPPLEMENTARY INFORMATION:

Indexed as

Bladder cancerCoffeeCohort studiesMeta-analysis

Identifiers

PMID31528185
PMCPMC6743122
OpenAlexW2972838834

What OpenQuestion holds

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LicenceCC BY
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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.