Evidence map›Paper›PMID 23349764›Full record

SynthesisPloS one2013

Obesity and risk of colorectal cancer: a systematic review of prospective studies.

Yanlei Ma, Yongzhi Yang, Feng Wang, Peng Zhang, Chenzhang Shi, Yang Zou, Huanlong Qin

Abstract readMeta-AnalysisSystematic Review
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 331 papers, 16 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
331citing papers in PubMed, 16 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

331 citing papers in PubMed, 16 syntheses or guidelines pooled it.

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271 more citing papers are in PubMed but not listed here.

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

7 authors.

Yanlei MaDepartment of Surgery, Shanghai Tenth People's Hospital, Affiliated to Tongji University, Shanghai, People's Republic of China. yanleima@live.cn
Yongzhi Yang
Feng Wang
Peng Zhang
Chenzhang Shi
Yang Zou
Huanlong Qin

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMounting evidence indicates that obesity may be associated with the risk of colorectal cancer (CRC). To conduct a systematic review of prospective studies assessing the association of obesity with the risk of CRC using meta-analysis. METHODOLOGY/PRINCIPAL

findingsRelevant studies were identified by a search of MEDLINE and EMBASE databases before January 2012, with no restrictions. We also reviewed reference lists from retrieved articles. We included prospective studies that reported relative risk (RR) estimates with 95% confidence intervals (CIs) for the association between general obesity [measured using body mass index (BMI)] or central obesity [measured using waist circumference (WC)] and the risk of colorectal, colon, or rectal cancer. Approximately 9, 000, 000 participants from several countries were included in this analysis. 41 studies on general obesity and 13 studies on central obesity were included in the meta-analysis. The pooled RRs of CRC for the obese vs. normal category of BMI were 1.334 (95% CI, 1.253-1.420), and the highest vs. lowest category of WC were 1.455 (95% CI, 1.327-1.596). There was heterogeneity among studies of BMI (P<0.001) but not among studies of WC (P=0.323).

conclusionsBoth of general and central obesity were positively associated with the risk of CRC in this meta-analysis.

Indexed as

Body Mass IndexWaist CircumferenceColorectal NeoplasmsHumansObesityProspective StudiesRisk AssessmentRisk Factors

Identifiers

PMID23349764
PMCPMC3547959

What OpenQuestion holds

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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.