Evidence map›Paper›PMID 29216920›Full record

SynthesisBMC public health2017

Body mass index had different effects on premenopausal and postmenopausal breast cancer risks: a dose-response meta-analysis with 3,318,796 subjects from 31 cohort studies.

Yanzi Chen, Li Liu, Quan Zhou, Mustapha Umar Imam, Jialin Cai, Yaxuan Wang, Minjie Qi, Panpan Sun, Zhiguang Ping, Xiaoli Fu

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in BMC public health, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 6 pooled it
4.0field-weighted citation impact, top 5% 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

68 citing papers in PubMed, 6 syntheses or guidelines pooled it, 105 citations in OpenAlex.

  1. Pooled it
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  10. Association of lifestyle factors with breast cancer incidence: An overview of systematic reviews.Chinese journal of cancer research = Chung-kuo yen cheng yen chiu · 2025
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  18. Adiposity throughout Adulthood and Risk of Young-Onset Breast Cancer Tumor Subtypes in the Young Women's Health History Study.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2024
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8 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

10 authors at 2 institutions in 1 country.

Yanzi ChenCollege of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
Li LiuSchool of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China.
Quan ZhouDepartment of Science and Education, The First People's Hospital of Changde City, Changde, Hunan, China.
Mustapha Umar ImamCollege of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
Jialin CaiSchool of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China.
Yaxuan WangSchool of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan, China.
Minjie QiCollege of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
Panpan SunCollege of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
Zhiguang PingCollege of Public Health, Zhengzhou University, Zhengzhou, Henan, China. ping_zhg@163.com.ORCID http://orcid.org/0000-0001-8924-0761
Xiaoli FuCollege of Public Health, Zhengzhou University, Zhengzhou, Henan, China. fuxiaoli@zzu.edu.cn.
Zhengzhou University · CNThe First People's Hospital of Changde · CN

Funding

National Natural Science Foundation of China 81001280National Natural Science Foundation of China 81202277National Natural Science Foundation of China 81373096
6 · The paper itself

Abstract

backgroundThere is sufficient evidence supporting a relationship between increased body mass index (BMI) and an increased risk for breast cancer among postmenopausal women. However, most studies have found a decreased risk for premenopausal breast cancer. This study was conducted to find out the different effects of BMI on the risk of breast cancer among premenopausal and postmenopausal women, and explore the potential factors that influence the associations.

methodsA dose-response meta-analysis with 3,318,796 participants from 31 articles was conducted. Cohort studies that included BMI and corresponding breast cancer risk were selected through various databases including PubMed, Medline, Web of Science, the China National Knowledge Infrastructure (CNKI) and Chinese Scientific Journals (VIP). Random effects models were used for analyzing the data.

resultsThe summary relative risks (RRs) were 1.33 (95%CI: 1.20-1.48) and 0.94(95%CI: 0.80-1.11) among postmenopausal and premenopausal women, respectively. The dose-response meta-analysis indicated a positive non-linear association between BMI and breast cancer risk among postmenopausal women, and compared to the mean level of the normal BMI category (21.5 kg/m

conclusionsIn line with previous studies BMI had different effects on pre-menopausal and postmenopausal breast cancer risk. However, contrary to previous studies, a high BMI was not associated with decreased risk in total pre-menopausal women. More research is needed to better understand these differences.

Indexed as

Body Mass IndexPostmenopausePremenopauseBreast NeoplasmsChinaCohort StudiesFemaleHumansRiskBody mass index (BMI)Breast cancerCohort studyDose-response relationshipMeta-analysis

Identifiers

PMID29216920
PMCPMC5721381
OpenAlexW2771064665

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.