Evidence map›Paper›PMID 27045572›Full record

SynthesisScientific reports2016

HbA1c and Risks of All-Cause and Cause-Specific Death in Subjects without Known Diabetes: A Dose-Response Meta-Analysis of Prospective Cohort Studies.

Guo-Chao Zhong, Ming-Xin Ye, Jia-Hao Cheng, Yong Zhao, Jian-Ping Gong

Abstract readMeta-Analysis
In one paragraph

Synthesis in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 3 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

22 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Pre-transplant HbA1c and BMI are associated with long-term survival after lung transplantation.Transplant international : official journal of the European Society for Organ Transplantation · 2026
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  15. The trials and tribulations of determining HbANature reviews. Endocrinology · 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

5 authors.

Guo-Chao ZhongDepartment of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
Ming-Xin YeDepartment of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
Jia-Hao ChengDepartment of Urinary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.
Yong ZhaoSchool of Public Health and Management, Chongqing Medical University, Chongqing 400016, China.
Jian-Ping GongDepartment of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Whether HbA1c levels are associated with mortality in subjects without known diabetes remains controversial. Moreover, the shape of the dose-response relationship on this topic is unclear. Therefore, a dose-response meta-analysis was conducted. PubMed and EMBASE were searched. Summary hazard ratios (HRs) were calculated using a random-effects model. Twelve studies were included. The summary HR per 1% increase in HbA1c level was 1.03 [95% confidence interval (CI) = 1.01-1.04] for all-cause mortality, 1.05 [95% CI = 1.02-1.07) for cardiovascular disease (CVD) mortality, and 1.02 (95% CI = 0.99-1.07) for cancer mortality. After excluding subjects with undiagnosed diabetes, the aforementioned associations remained significant for CVD mortality only. After further excluding subjects with prediabetes, all aforementioned associations presented non-significance. Evidence of a non-linear association between HbA1c and mortality from all causes, CVD and cancer was found (all Pnon-linearity < 0.05). The dose-response curves were relatively flat for HbA1c less than around 5.7%, and rose steeply thereafter. In conclusion, higher HbA1c level is associated with increased mortality from all causes and CVD among subjects without known diabetes. However, this association is driven by those with undiagnosed diabetes or prediabetes. The results regarding cancer mortality should be treated with caution due to limited studies.

Indexed as

Cause of DeathAdultAgedAlgorithmsCardiovascular DiseasesCohort StudiesDiabetes ComplicationsDiabetes MellitusDose-Response Relationship, DrugFemaleGlycated HemoglobinHumansMaleMiddle AgedNeoplasmsPrediabetic StateGlycated Hemoglobinhemoglobin A1c protein, human

Identifiers

PMID27045572
PMCPMC4820688

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.