Evidence map›Paper›PMID 35798867›Full record

ArticleScientific reports2022

Metformin use and the risk of total knee replacement among diabetic patients: a propensity-score-matched retrospective cohort study.

Francisco T T Lai, Benjamin H K Yip, David J Hunter, David P Rabago, Christian D Mallen, Eng-Kiong Yeoh, Samuel Y S Wong, Regina Ws Sit

Open access · goldFull text read
In one paragraph

Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
2.3field-weighted citation impact, top 11% 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 29 citations in OpenAlex.

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  16. Metformin use and associated risk of total joint replacement in patients with type 2 diabetes: a population-based matched cohort study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2022
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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 7 institutions in 5 countries.

Francisco T T LaiThe Jockey Club School of Public Health and Primary Care, Faculty of Medicine, Postgraduate Education Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Sha Tin, New Territories, Hong Kong, China.
Benjamin H K YipThe Jockey Club School of Public Health and Primary Care, Faculty of Medicine, Postgraduate Education Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Sha Tin, New Territories, Hong Kong, China.
David J HunterInstitute of Bone and Joint Research, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia.
David P RabagoDepartment of Family and Community Medicine, Penn State University, Hershey, PA, USA.
Christian D MallenSchool of Medicine, Keele University, Keele, UK.
Eng-Kiong YeohThe Jockey Club School of Public Health and Primary Care, Faculty of Medicine, Postgraduate Education Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Sha Tin, New Territories, Hong Kong, China.
Samuel Y S WongThe Jockey Club School of Public Health and Primary Care, Faculty of Medicine, Postgraduate Education Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Sha Tin, New Territories, Hong Kong, China.
Regina Ws SitThe Jockey Club School of Public Health and Primary Care, Faculty of Medicine, Postgraduate Education Centre, Prince of Wales Hospital, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Sha Tin, New Territories, Hong Kong, China. reginasit@cuhk.edu.hk.
Hong Kong Jockey Club · CNChinese University of Hong Kong · CNKeele University · GBPenn State Milton S. Hershey Medical Center · USPrince of Wales Hospital · CNUniversity of Hong Kong · HKUniversity of Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Metformin has been shown to modulate meta-inflammation, an important pathogenesis in knee osteoarthritis (OA). The study aimed to test the association between regular metformin use with total knee replacement (TKR) in patients with diabetes. This is a retrospective study with electronic records retrieved in Hong Kong public primary care. Patients with diabetes aged ≥ 45 who visited during 2007 to 2010, were followed up for a four-year period from 2011 to 2014 to determine the incidence of TKR. Propensity score matching based on age, sex, co-medications and chronic conditions was conducted to adjust for confounding. Cox regression was implemented to examine the association between metformin use and TKR. In total, 196,930 patients were eligible and 93,330 regular metformin users (defined as ≥ 4 prescriptions over the previous year) and non-users were matched. Among 46,665 regular users, 184 TKRs were conducted, 17.1% fewer than that among non-users. Cox regression showed that regular metformin users had a 19%-lower hazard of TKR [hazard ratio (HR) = 0.81, 95% confidence interval: 0.67 to 0.98, P = 0.033], with a dose-response relationship. Findings suggest a potential protective effect of metformin on knee OA progression and later TKR incidence among diabetic patients.

Indexed as

Arthroplasty, Replacement, KneeDiabetes MellitusMetforminOsteoarthritis, KneeHumansPropensity ScoreRetrospective StudiesMetformin

Identifiers

PMID35798867
PMCPMC9262887
OpenAlexW4284894593

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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.