Evidence map›Paper›PMID 20478961›Full record

ArticleBMJ (Clinical research ed.)2010

Glycated haemoglobin A1c for diagnosing diabetes in Chinese population: cross sectional epidemiological survey.

Yuqian Bao, Xiaojing Ma, Huating Li, Mi Zhou, Cheng Hu, Haiya Wu, Junling Tang, Xuhong Hou, Kunsan Xiang, Weiping Jia

Open access · hybridAbstract readMulticenter Study
In one paragraph

Article in BMJ (Clinical research ed.), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 1 pooled it
8.7field-weighted citation impact, top 2% 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

53 citing papers in PubMed, 1 synthesis or guideline pooled it, 134 citations in OpenAlex.

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  17. Prevalence of Diabetes and Prediabetes in Adults from a Third-Tier City in Eastern China: A Cross-Sectional Study.Diabetes therapy : research, treatment and education of diabetes and related disorders · 2019
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 2 institutions in 1 country.

Yuqian BaoDepartment of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Diabetes Institute, Shanghai Clinical Center of Diabetes, Shanghai 200233, China.
Xiaojing Ma
Huating Li
Mi Zhou
Cheng Hu
Haiya Wu
Junling Tang
Xuhong Hou
Kunsan Xiang
Weiping Jia
Shanghai Jiao Tong University · CNShanghai Sixth People's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate haemoglobin A1c (HbA(1c)) in diagnosing diabetes and identify the optimal HbA(1c) threshold to be used in Chinese adults.

designMultistage stratified cross sectional epidemiological survey.

settingShanghai, China, 2007-8.

participants4886 Chinese adults over 20 years of age with no history of diabetes.

main outcome measuresPerformance of HbA(1c) at increasing thresholds for diagnosing diabetes.

resultsThe area under the receiver operating characteristics curve for detecting undiagnosed diabetes was 0.856 (95% confidence interval 0.828 to 0.883) for HbA(1c) alone and 0.920 (0.900 to 0.941) for fasting plasma glucose alone. Very high specificity (96.1%, 95% confidence interval 95.5% to 96.7%) was achieved at an HbA(1c) threshold of 6.3% (2 SD above the normal mean). Moreover, the corresponding sensitivity was 62.8% (57.1% to 68.3%), which was equivalent to that of a fasting plasma glucose threshold of 7.0 mmol/l (57.5%, 51.7% to 63.1%) in detecting undiagnosed diabetes. In participants at high risk of diabetes, the HbA(1c) threshold of 6.3% showed significantly higher sensitivity (66.9%, 61.0% to 72.5%) than both fasting plasma glucose >or=7.0 mmol/l (54.4%, 48.3% to 60.4%) and HbA(1c) >or=6.5% (53.7%, 47.6% to 59.7%) (P<0.01).

conclusionsAn HbA(1c) threshold of 6.3% was highly specific for detecting undiagnosed diabetes in Chinese adults and had sensitivity similar to that of using a fasting plasma glucose threshold of 7.0 mmol/l. This optimal HbA(1c) threshold may be suitable as a diagnostic criterion for diabetes in Chinese adults when fasting plasma glucose and oral glucose tolerance tests are not available.

Indexed as

AdultAgedArea Under CurveBlood GlucoseChinaCross-Sectional StudiesDiabetes MellitusFemaleGlycated HemoglobinHumansMaleMiddle AgedReference StandardsSensitivity and SpecificityYoung AdultBlood GlucoseGlycated Hemoglobin

Identifiers

PMID20478961
PMCPMC2871988
OpenAlexW2151031797

What OpenQuestion holds

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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.