Evidence map›Paper›PMID 31250446›Full record

ArticleInternational dental journal2019

Income or education, which has a stronger association with dental implant use in elderly people in Japan?

Hazem Abbas, Jun Aida, Masashige Saito, Georgios Tsakos, Richard G Watt, Shigeto Koyama, Katsunori Kondo, Ken Osaka

Abstract read
In one paragraph

Article in International dental journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–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

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

11 citing papers in PubMed.

  1. Article
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  8. Oral function status of older patients seeking dental implant treatment.International journal of implant dentistry · 2024
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  11. Article
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.

Hazem AbbasDepartment of International and Community Oral Health, Graduate School of Dentistry, Tohoku University, Sendai, Japan.ORCID https://orcid.org/0000-0003-1529-290X
Jun AidaDepartment of International and Community Oral Health, Graduate School of Dentistry, Tohoku University, Sendai, Japan.
Masashige SaitoDepartment of Social Welfare, Nihon Fukushi University, Mihama, Aichi, Japan.
Georgios TsakosDepartment of Epidemiology and Public Health, University College London, London, UK.
Richard G WattDepartment of Epidemiology and Public Health, University College London, London, UK.
Shigeto KoyamaDental Implant Center, Tohoku University Hospital, Sendai, Japan.
Katsunori KondoDepartment of Social Preventive Medical Sciences, Center for Preventive Medical Sciences, Chiba University, Chiba, Japan.
Ken OsakaDepartment of International and Community Oral Health, Graduate School of Dentistry, Tohoku University, Sendai, Japan.

Funding

Health Labour Sciences Research Grants H28-Choju-Ippan-002JSPS (Japan Society for the Promotion of Science)KAKENHI 15H04781KAKENHI 16H05556KAKENHI JP15H01972Personal Health Record (PHR) Utilization Project from AMEDResearch and Development Grants for Longevity Science from Japan Agency for Medical Research and Development (AMED)Research Funding for Longevity Sciences from National Center for Geriatrics and Gerontology (29-42)World Health Organization Centre for Health Development (WHO Kobe Centre) 2017/713981
6 · The paper itself

Abstract

objectivesAlthough inequalities in dental implant use based on educational level have been reported, no study has used income as a proxy for the socioeconomic status. We examined: (i) income inequalities in implant use; and (ii) whether income or education has a stronger association with implant use in elder Japanese.

methodsIn 2016, a self-reported questionnaire was mailed to participants aged 65 years or older living across Japan as part of the ongoing Japan Gerontological Evaluation Study. We used data from 84,718 respondents having 19 or fewer teeth. After multiple imputation, multi-level logistic regression estimated the association of dental implant use with equivalised income level and years of formal education. Confounders were age, sex, and density of dental clinics in the residential area.

results3.1% of respondents had dental implants. Percentages of dental implant use among the lowest (≤ 9 years) and highest (≥ 13 years) educational groups were 1.8 and 5.1, respectively, and among the lowest (0 < 12.2 '1,000 USD/year') and highest (≥ 59.4 '1,000 USD/year') income groups were 1.7 and 10.4, respectively. A fully adjusted model revealed that both income and education were independently associated with dental implant use. Odds ratios for implant use in the highest education and income groups were 2.13 [95% CI = 1.94-2.35] and 4.85 [95% CI = 3.78-6.22] compared with the lowest education and income groups, respectively. From a model with standardised variables, income showed slightly stronger association than education.

conclusionThis study reveals a public health problem that even those with the highest education but low income might have limited accessibility to dental implant services.

Indexed as

Dental ImplantsAgedDental CareHumansIncomeJapanSocial ClassDental Implantsaccess to careDental implant(s)dental public healthdental services researchepidemiology

Identifiers

PMID31250446
PMCPMC9378978

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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.