Evidence map›Paper›PMID 26035667›Full record

ArticleInternational journal of environmental research and public health2015

Disparities in Children's Blood Lead and Mercury Levels According to Community and Individual Socioeconomic Positions.

Sinye Lim, Mina Ha, Seung-Sik Hwang, Mia Son, Ho-Jang Kwon

Open access · goldAbstract read
In one paragraph

Article in International journal of environmental research and public health, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 16% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Prenatal Mercury Exposure and Neurodevelopment up to the Age of 5 Years: A Systematic Review.International journal of environmental research and public health · 2022
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Blood Lead Levels in Children of Southwest Iran, Aged 2-6 Years and Associated Factors.Journal of clinical and diagnostic research : JCDR · 2017
    Article
  8. Trend of childhood blood lead levels in cities of China in recent 10 years.Environmental science and pollution research international · 2017
    Article
  9. Article
  10. Article
  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

5 authors at 4 institutions in 1 country.

Sinye LimDepartment of Occupational and Environmental Medicine, Kyung Hee University Hospital, 23 Kyungheedae-Ro, Dongdaemun-Gu, Seoul 130-872, Korea. drforest@hanmail.net.
Mina HaDepartment of Preventive Medicine, Dankook University College of Medicine, 119 Dandae-Ro, Dongnam-Gu, Cheonan, Chungnam 330-714, Korea. minaha@dku.edu.
Seung-Sik HwangDepartment of Social Medicine, Inha University School of Medicine, 366 Seohae-Daero, Jung-Gu, Incheon 400-712, Korea. cyberdoc@inha.ac.kr.
Mia SonDepartment of Preventive Medicine, Kangwon National University School of Medicine, 1, Gangwondaehak-Gil, Chuncheon, Gangwon 200-701, Korea. sonmia@empal.com.
Ho-Jang KwonDepartment of Preventive Medicine, Dankook University College of Medicine, 119 Dandae-Ro, Dongnam-Gu, Cheonan, Chungnam 330-714, Korea. hojang@dku.edu.
Dankook University · KRInha University · KRKangwon National University · KRKyung Hee University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We aimed to examine the associations between blood lead and mercury levels and individual and community level socioeconomic positions (SEPs) in school-aged children. A longitudinal cohort study was performed in 33 elementary schools in 10 cities in Korea. Among a total of 6094 children included at baseline, the final study population, 2281 children followed-up biennially, were analyzed. The geometric mean (GM) levels of blood lead were 1.73 μg/dL (range 0.02-9.26) and 1.56 μg/dL (range 0.02-6.83) for male and female children, respectively. The blood lead levels were significantly higher in males, children living in rural areas, and those with lower individual SEP. The GM levels of blood mercury were 2.07 μg/L (range 0.09-12.67) and 2.06 μg/L (range 0.03-11.74) for males and females, respectively. Increased blood mercury levels were significantly associated with urban areas, higher individual SEP, and more deprived communities. The risk of high blood lead level was significantly higher for the lower individual SEP (odds ratio (OR) 2.18, 95% confidence interval (CI) 1.36-3.50 in the lowest educational attainment of the father), with a significant dose-response relationship observed after adjusting for the community SEP. The association between high blood lead levels and lower individual SEP was much stronger in the more deprived communities (OR 2.88, 95% CI 1.27-6.53) than in the less deprived communities (OR 1.40, 95% CI 0.76-2.59), and showed a significant decreasing trend during the follow-up only in the less deprived communities. The risk of high blood mercury levels was higher in higher individual SEP (OR 0.64, 95% CI 0.40-1.03 in the lowest educational attainment of the father), with a significant dose-response relationship noted. Significant decreasing trends were observed during the follow-up both in the less and more deprived communities. From a public health point-of-view, community level intervention with different approaches for different metals is warranted to protect children from environmental exposure.

Indexed as

ChildCohort StudiesEnvironmental ExposureFemaleHumansLeadMaleMercuryRepublic of KoreaResidence CharacteristicsSocioeconomic FactorsLeadMercuryblood leadblood mercurychildrencommunity interventionsocioeconomic position

Identifiers

PMID26035667
PMCPMC4483698
OpenAlexW2169703219

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.