Evidence map›Paper›PMID 34218420›Full record

ArticleDiabetes therapy : research, treatment and education of diabetes and related disorders2021

Comparative Effects of Metformin and Dipeptidyl Peptidase-4 Inhibitors in Japanese Obese Patients with Type 2 Diabetes: A Claims Database Study.

Masato Odawara, Sumiko Aoi, Tomomi Takeshima, Kosuke Iwasaki

Open access · goldAbstract read
In one paragraph

Article in Diabetes therapy : research, treatment and education of diabetes and related disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.9field-weighted citation impact, top 25% 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

5 citing papers in PubMed, 7 citations in OpenAlex.

  1. Review
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  4. 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

4 authors at 2 institutions in 1 country.

Masato OdawaraDepartment of Diabetes, Metabolism and Endocrinology, Tokyo Medical University, 6-7-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo, Japan. odawara@tokyo-med.ac.jp.
Sumiko AoiMedical Affairs, Sumitomo Dainippon Pharma Co., Ltd., 1-13-1, Kyobashi, Chuo-ku, Tokyo, Japan.
Tomomi TakeshimaMilliman Inc., 8F, Urbannet Kojimachi Building, 1-6-2 Kojimachi, Chiyoda-ku, Tokyo, Japan.
Kosuke IwasakiMilliman Inc., 8F, Urbannet Kojimachi Building, 1-6-2 Kojimachi, Chiyoda-ku, Tokyo, Japan.
Sumitomo Dainippon Pharma (Japan) · JPTokyo Medical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionMetformin has demonstrated favorable effects on glycemic control in patients with type 2 diabetes (T2D), regardless of the body mass index (BMI). On the contrary, dipeptidyl peptidase-4 inhibitors (DPP-4is) are reportedly less effective in patients having high BMI values (≥ 25 or ≥ 30). The aim of this study was to compare metformin and DPP-4is as first-line treatment for their effects on glycemic control and improvement of other health outcomes among obese and non-obese Japanese patients with T2D.

methodsA Japanese health insurance claims database that also included annual medical checkup data was used. This database included data on company employees who were members of health insurance societies and their family members. Most patients were aged < 65 years and most were men. Inclusion criteria were: (1) a first T2D diagnosis between May 2010 and June 2017; (2) either metformin or a DPP-4i prescribed as the first-line antidiabetic therapy; and (3) glycated hemoglobin (HbA1c) and BMI data available for the 3-month period immediately preceding the initiation of antidiabetic treatment (baseline). The reduction rate in excessive HbA1c (> 6.5%; primary outcome) and changes in fasting plasma glucose, BMI, triglyceride, cholesterol, and abdominal circumference (secondary outcomes) at 12 months from baseline were compared between treatments.

resultsWhen evaluated relative to the baseline BMI, the mean reduction rate in excessive HbA1c tended to be higher in the metformin group than in the DPP-4i group, especially in patients with BMI ≥ 25. Similarly, significant improvement was observed in most outcomes in obese patients prescribed metformin compared to those prescribed a DPP-4i. In contrast, in patients with BMI < 25, HbA1c reduction was greater in patients prescribed DPP-4i and fewer outcomes showed significant improvement in patients prescribed metformin.

conclusionIn obese Japanese patients with T2D, greater improvements in glycemic control and other outcomes were seen with metformin as first-line treatment for T2D compared with DPP-4is, although some limitations regarding the database information should be considered.

Indexed as

Body mass indexDatabase researchDipeptidyl peptidase-4 inhibitorsGlycemic controlMetforminObesityType 2 diabetes

Identifiers

PMID34218420
PMCPMC8342731
OpenAlexW3182670042

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.