Evidence map›Paper›PMID 33409669›Full record

ArticleActa diabetologica2021

Educational attainment protects against type 2 diabetes independently of cognitive performance: a Mendelian randomization study.

Jialin Liang, Huan Cai, Ganxiong Liang, Zhonghua Liu, Liang Fang, Baile Zhu, Baoying Liu, Hao Zhang

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In one paragraph

Article in Acta diabetologica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
3.1field-weighted citation impact, top 8% 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

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.

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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

8 authors at 2 institutions in 1 country.

Jialin Liang *Department of Endocrinology and Metabolism, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China.
Huan Cai *Department of Rehabilitation, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China.
Ganxiong LiangDepartment of Endocrinology and Metabolism, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China. ganxiong_liang@126.com.
Zhonghua LiuDepartment of Rehabilitation, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China.
Liang FangDepartment of Rehabilitation, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China.
Baile ZhuDepartment of Endocrinology and Metabolism, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China.
Baoying LiuDepartment of Endocrinology and Metabolism, Zhongshan City People's Hospital, 2 East Sunwen Road, Zhongshan, 528403, Guangdong, China.
Hao ZhangDepartment of Neurology, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China. zh_hao_neurol@163.com.ORCID http://orcid.org/0000-0002-1132-986X
Zhongshan People's Hospital · CNHangzhou First People's Hospital · CN

Funding

Social Welfare Science and Technology Research Project of Zhongshan City 2018B1065
6 · The paper itself

Abstract

aimsObservational studies have reported a negative association between educational attainment and type 2 diabetes (T2D), but the causality remains largely unknown. The aim of this study is to investigate the potential causal effect of educational attainment on T2D and whether such an effect is independent of cognitive performance.

methodsWe conducted two-sample Mendelian randomization (MR) analysis using genetic variants strongly associated with educational attainment and cognitive performance to estimate the causal associations with T2D, among 61,714 T2D cases and 593,952 controls. We also performed multivariable MR to explore the independent effects of educational attainment and cognitive performance on T2D risk.

resultsIn univariable MR, we found evidence that genetically predicted higher educational attainment [odds ratio (OR) 0.53 per 1-standard deviation (SD) increase; 95% confidence interval (CI) 0.47-0.60] and cognitive performance (OR 0.79 per 1-SD increase; 95%CI 0.69-0.91) were related to decreased risk of T2D. Our further multivariable MR results suggested that more years of education led to a reduced likelihood of T2D independently of cognitive performance (OR 0.52; 95%CI 0.42-0.64). However, the protective effect of cognitive performance on T2D was attenuated once educational attainment was controlled for (OR 1.08; 95%CI 0.88-1.32).

conclusionsWe provided evidence to suggest that educational attainment protects against T2D independently of cognitive performance, but does not support a negative causal association between cognitive performance and T2D independently of educational attainment. Education might represent a potential target for intervention to battle type 2 diabetes risk.

Indexed as

Educational StatusBlood GlucoseBody Mass IndexCase-Control StudiesCognitionDiabetes Mellitus, Type 2FemaleGenetic Predisposition to DiseaseGenome-Wide Association StudyHumansMaleMendelian Randomization AnalysisPolymorphism, Single NucleotideRisk FactorsSocioeconomic FactorsBlood GlucoseCognitionEducationMendelian randomizationType 2 diabetes

Identifiers

PMID33409669
OpenAlexW3119572503

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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.