Evidence map›Paper›PMID 32907895›Full record

ArticleBMJ open2020

Association between blood lead level and risk of stroke in Korean adults: a cross-sectional study in the Korea National Health and Nutrition Examination Survey 2008-2013.

Minkyeong Kim, Sang-Moon Yun, Jihyun Jeong, Chulman Jo, Young Ho Koh

Abstract read
In one paragraph

Article in BMJ open, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 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

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

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Environmental toxic metal contaminants and risk of stroke: a systematic review and meta-analysis.Environmental science and pollution research international · 2022
    Pooled it
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  3. Review
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  5. Observational
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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

5 authors.

Minkyeong KimDivision of Brain Diseases, Korea National Institute of Health, Cheongju, South Korea.
Sang-Moon YunDivision of Brain Diseases, Korea National Institute of Health, Cheongju, South Korea.
Jihyun JeongDivision of Brain Diseases, Korea National Institute of Health, Cheongju, South Korea.
Chulman JoDivision of Brain Diseases, Korea National Institute of Health, Cheongju, South Korea.
Young Ho KohDivision of Brain Diseases, Korea National Institute of Health, Cheongju, South Korea kohyoungho122@gmail.com.ORCID 0000-0001-9934-5321

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesAlthough lead is a potential risk factor for cardiovascular diseases such as stroke, research on this association in the Korean population remains limited. Therefore, we aimed to investigate the association between lead level and stroke in Korean adults.

designA population-based cross-sectional study.

settingThe Korea National Health and Nutrition Examination Survey 2008-2013, which enrolled a representative sample of the Korean population.

participantsWe excluded participants younger than 20 years, missing weight data, pregnant or lactating, and missing blood lead and stroke data. A total of 11 510 participants were included in this analysis. PRIMARY AND SECONDARY OUTCOME MEASUREMENT: The participants were classified by blood lead concentration into the low-level (≤2.189 µg/dL, n=5756) and high-level (>2.189 µg/dL, n=5754) groups. The main outcome, stroke, was assessed by information from physician diagnosis, prevalence of stroke or treatment for stroke. The ORs and 95% CIs were calculated to evaluate the association between blood lead level and stroke using multivariate logistic regression analysis.

resultsAlthough blood lead level was not significantly associated with stroke (OR: 1.30, 95% CI: 0.66-2.58) in the multivariate-adjusted model, in individuals with hypertension, the high-level group was 2.36-fold higher odds of stroke (OR: 2.36, 95% CI: 1.02-5.44) compared to that in the low-level group. No association was observed in individuals with normotension (OR: 0.42, 95% CI: 0.13-1.38, p for interaction=0.007).

conclusionThe association between blood lead concentration and stroke may be influenced by hypertension status. Our findings suggest the need for closer attention to lead exposure in patients with hypertension.

Indexed as

LeadStrokeAdultCross-Sectional StudiesFemaleHumansLactationNutrition SurveysRepublic of KoreaRisk FactorsLeadepidemiologyhypertensionstroke

Identifiers

PMID32907895
PMCPMC7482501

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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.