Evidence map›Paper›PMID 34020971›Full record

ArticleBMJ open2021

Association between socioeconomic status and dental caries among Chinese preschool children: a cross-sectional national study.

Tingting Zhang, Jialan Hong, Xueting Yu, Qiulin Liu, Andi Li, Zhijing Wu, Xiaojuan Zeng

Abstract read
In one paragraph

Article in BMJ open, 2021. 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
–field-weighted citation impact
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

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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.

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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

7 authors.

Tingting ZhangDepartment of Dental Public Health, College & Hospital of Stomatology of Guangxi Medical University, Nanning, China.ORCID 0000-0002-3669-3174
Jialan HongDepartment of Epidemiology & Public Health, University College London, London, UK.
Xueting YuDepartment of Dental Public Health, College & Hospital of Stomatology of Guangxi Medical University, Nanning, China.
Qiulin LiuDepartment of Dental Public Health, College & Hospital of Stomatology of Guangxi Medical University, Nanning, China.
Andi LiDepartment of Dental Public Health, College & Hospital of Stomatology of Guangxi Medical University, Nanning, China.
Zhijing WuDepartment of Dental Public Health, College & Hospital of Stomatology of Guangxi Medical University, Nanning, China.
Xiaojuan ZengDepartment of Dental Public Health, College & Hospital of Stomatology of Guangxi Medical University, Nanning, China xiaojuan.zeng@qq.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesSocioeconomic inequalities in oral health are often neglected in oral health promotion. This cross-sectional study assessed the association between dental caries and socioeconomic status (SES) among preschool children in China.

designCross-sectional study.

settingData from the Fourth National Oral Health Survey of China (2015), comprising of 40 360 children aged 3-5 years was used.

methodsDental caries indicators including prevalence of dental caries, dental pain experience and number of decayed, missing and filling teeth (dmft). SES indicators included parental education and household income. The associations between SES and dental caries were analysed by using negative binomial regression or Poisson regression models according to data distribution. Relative and absolute inequalities in dental caries were quantified by using the Relative Index of Inequality (RII) and Slope Index of Inequality (SII), respectively.

resultsThere were significant associations between SES and prevalence of dental caries and dmft (p<0.001). Children from lower educated (RII 1.36, 95% CI 1.3 to 1.43; SII 0.97, 95% CI 0.81 to 1.13) and lower household income (RII 1.17, 95% CI 1.11 to 1.24; SII 0.55, 95% CI 0.35 to 0.75) families had higher dmft than those from well-educated and most affluent families. Relative and absolute inequalities in dental caries were larger in urban areas by household income, and in rural areas by parental education.

conclusionsAssociation between dental caries and SES was demonstrated and socioeconomic inequalities in dental caries existed among Chinese preschool children.

Indexed as

Dental CariesChild, PreschoolChinaCross-Sectional StudiesDMF IndexHumansPrevalenceSocial ClassSocioeconomic Factorscommunity child healthepidemiologyhealth policy

Identifiers

PMID34020971
PMCPMC8144044

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