Evidence map›Paper›PMID 15662555›Full record

ArticleDiabetologia2004

Coffee consumption and glucose tolerance status in middle-aged Japanese men.

T Yamaji, T Mizoue, S Tabata, S Ogawa, K Yamaguchi, E Shimizu, M Mineshita, S Kono

Open access · bronzeAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Diabetologia, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 pooled it
4.5field-weighted citation impact, top 6% 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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it, 98 citations in OpenAlex.

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  19. Association of moderate coffee intake with self-reported diabetes among urban Brazilians.International journal of environmental research and public health · 2011
    Article
  20. [Coffee and diabetes].Medizinische Klinik (Munich, Germany : 1983) · 2010
    Review
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 3 institutions in 1 country.

T YamajiDepartment of Preventive Medicine, Faculty of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan. taiki@kuaccm.med.kyushu-u.ac.jp
T Mizoue
S Tabata
S Ogawa
K Yamaguchi
E Shimizu
M Mineshita
S Kono
Japanese Red Cross Kumamoto Hospital · JPKyushu University · JPFukuoka Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aims/hypothesisSeveral studies have reported that coffee has a protective effect against the development of type 2 diabetes. However, few of these studies used the standard glucose tolerance test to diagnose type 2 diabetes. The aim of this study was to investigate the relationship between coffee and green tea consumption and glucose tolerance status as determined using a 75-g OGTT.

methodsWe performed a cross-sectional study of 3224 male officials of the self-defence forces. Glucose tolerance status was determined in accordance with the 1998 World Health Organization criteria, and average intakes of coffee and green tea over the previous year were assessed by a self-administered questionnaire. The figures obtained were adjusted for BMI, physical activity and other factors.

resultsA total of 1130 men were identified as having glucose intolerance (IFG, IGT or type 2 diabetes). Compared with those who did not consume coffee on a daily basis, fasting and 2-h post-load plasma glucose levels were 1.5% and 4.3% lower in those who drank 5 cups of coffee or more per day respectively. The adjusted odds ratios of glucose intolerance for categories of <1, 1-2, 3-4 and >/=5 cups of coffee per day were 1.0 (referent), 0.8 (95% CI 0.6-1.0), 0.7 (95% CI 0.6-0.9) and 0.7 (95% CI 0.5-0.9) respectively (p=0.0001 for trend). No clear association was observed between green tea drinking and glucose tolerance status. CONCLUSIONS/

interpretationCoffee consumption may inhibit postprandial hyperglycaemia and thereby protect against the development of type 2 diabetes mellitus.

Indexed as

CoffeeTeaAlcohol DrinkingBlood GlucoseCross-Sectional StudiesDiabetes Mellitus, Type 2Glucose Tolerance TestHumansJapanMaleMiddle AgedRisk FactorsSmokingBlood GlucoseCoffeeTea

Identifiers

PMID15662555
OpenAlexW2082696120

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.