Evidence map›Paper›PMID 26969644›Full record

ArticleBMJ open2016

Associations of cigarette smoking, betel quid chewing and alcohol consumption with high-sensitivity C-reactive protein in early radiographic knee osteoarthritis: a cross-sectional study.

Yi Zhang, Chao Zeng, Jie Wei, Hui Li, Tuo Yang, Ye Yang, Zhen-han Deng, Xiang Ding, Guanghua Lei

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
1.5field-weighted citation impact, top 18% 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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 11 citations in OpenAlex.

  1. C-reactive protein and its ratio with albumin as a marker of poor prognosis in oral cancer: a systematic review and meta-analysis.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Pooled it
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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

9 authors at 2 institutions in 1 country.

Yi ZhangDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Chao ZengDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Jie WeiHealth Management Center, Xiangya Hospital, Central South University, Changsha, Hunan Province, China Department of Epidemiology and Health Statistics, School of Public Health, Central South University, Changsha, Hunan Province, China.
Hui LiDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Tuo YangDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Ye YangDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Zhen-han DengDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Xiang DingDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Guanghua LeiDepartment of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
Xiangya Hospital Central South University · CNCentral South University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesHigh-sensitivity C-reactive protein (hsCRP) is possibly related to osteoarthritis (OA) progression and a variety of OA-related symptoms. This study aimed to examine associations between cigarette smoking, betel quid chewing and alcohol consumption and hsCRP in early radiographic knee OA.

designCross-sectional health examination survey.

settingThis primary study was conducted in a health examination centre in China.

participants936 (656 men and 280 women) patients with early radiographic knee OA were included in this cross-sectional study. PRIMARY AND SECONDARY OUTCOME MEASURES: Smoking status was classified into four levels based on daily smoking habit: 0/day, 1-10/day, 11-20/day and >20/day. Betel quid chewing and alcohol consumption status was divided into 'Yes' or 'No'. Early radiographic knee OA was defined as Kellgren Lawrence (K-L) grade 1 or 2 in at least one leg, and elevated hsCRP was assessed as ≥ 3.0 mg/L.

resultsAfter adjustment for a number of potential confounding factors, a significant positive association between cigarette smoking and hsCRP was observed in the multivariable model. The multivariable-adjusted ORs (95% CI) of elevated hsCRP (≥ 3.0 mg/L) in the second (1-10/day, n=133), third (11-20/day, n=59) and highest (>20/day, n=104) cigarette smoking categories were 1.54 (95% CI 0.91 to 2.61), 1.27 (95% CI 0.57 to 2.79) and 2.09 (95% CI 1.20 to 3.64), respectively, compared with the non-smoker category (n=640). In addition, there was a positive dose-response relationship between cigarette smoking and elevated hsCRP (p for trend=0.01). No significant associations between betel quid chewing and alcohol consumption and hsCRP were observed in the multivariable model.

conclusionsThis study indicated that cigarette smoking was positively associated with serum hsCRP level in patients with early radiographic knee OA. However, in view of the nature of cross-sectional designs, the results need to be confirmed by further prospective studies.

Indexed as

AdultAlcohol DrinkingArecaChinaC-Reactive ProteinCross-Sectional StudiesFemaleHumansLogistic ModelsMaleMasticationMiddle AgedMultivariate AnalysisOsteoarthritis, KneeRadiographyRisk FactorsC-Reactive Proteinalcohol drinkingbetel quilt chewingcigarette smokingC-reactive proteinosteoarthritis

Identifiers

PMID26969644
PMCPMC4800118
OpenAlexW2323962638

What OpenQuestion holds

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LicenceCC BY-NC
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.