Evidence map›Paper›PMID 29974223›Full record

ArticleZeitschrift fur Rheumatologie2019

Causal association between smoking behavior and the decreased risk of osteoarthritis: a Mendelian randomization.

Young Ho Lee

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In one paragraph

Article in Zeitschrift fur Rheumatologie, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 5 pooled it
1.0field-weighted citation impact, top 23% 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

51 citing papers in PubMed, 5 syntheses or guidelines pooled it, 63 citations in OpenAlex.

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  16. [A two-sample Mendelian randomization study on the association between temporomandibular disorder and insomnia].Hua xi kou qiang yi xue za zhi = Huaxi kouqiang yixue zazhi = West China journal of stomatology · 2025
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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Young Ho LeeDepartment of Rheumatology, Korea University Anam Hospital, Korea University College of Medicine, 73, Inchon-ro, Seongbuk-gu, 02841, Seoul, Korea (Republic of). lyhcgh@korea.ac.kr.
Korea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis study aimed to examine whether smoking behavior is causally associated with osteoarthritis.

methodsA two-sample Mendelian randomization (MR) analysis using the inverse-variance weighted (IVW), weighted median, and MR-Egger regression methods was performed. We used the publicly available summary statistics datasets of smoking behavior genome-wide association studies (GWASs; n = 85,997) as an exposure, and a GWAS in 7410 patients with osteoarthritis in the arcOGEN study and 11,009 controls of European ancestry as an outcome.

resultsWe selected four single nucleotide polymorphisms (SNPs) from GWASs of smoking behavior as instrumental variables (IVs) to improve inference. These SNPs were located at CHRNA3 (rs1051730), SLC25A5P5A9 (rs215614), CHRNB3 (rs6474412), and CYP2B6 (rs7260329). The IVW method showed evidence to support an inverse causal association between smoking behavior and osteoarthritis in the knee and hip (beta = -0.056, standard error [SE] = 0.027, p = 0.035). MR-Egger regression revealed that directional pleiotropy was unlikely to be biasing the result (intercept = -0.005; p = 0.848), but showed no causal association between smoking behavior and osteoarthritis (beta = -0.048, SE = 0.048, p = 0.427). However, the weighted median approach yielded evidence of a negative causal association between smoking behavior and osteoarthritis (beta = -0.056, SE = 0.028, p = 0.046). Cochran's Q test and the funnel plot indicated no evidence of heterogeneity between IV estimates based on the individual variants.

conclusionThe results of MR analysis support that smoking behavior was causally associated with a reduced risk of osteoarthritis.

Indexed as

Genome-Wide Association StudyMendelian Randomization AnalysisSmokingHumansOsteoarthritisOsteoarthritis, HipOsteoarthritis, KneePolymorphism, Single NucleotideCausal associationMendelian randomizationOsteoarthritisSmokingSusceptibility

Identifiers

PMID29974223
OpenAlexW2882778641

What OpenQuestion holds

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Read underepoch 390

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.