Evidence map›Paper›PMID 32938436›Full record

ArticleBMC pediatrics2020

Blood lead concentration and its associated factors in preschool children in eastern Iran: a cross-sectional study.

Mahmoud Zardast, Seyedeh Samira Khorashadi-Zadeh, Samaneh Nakhaee, Alireza Amirabadizadeh, Omid Mehrpour

Open access · goldAbstract read
In one paragraph

Article in BMC pediatrics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

7 citing papers in PubMed, 16 citations in OpenAlex.

  1. Observational
  2. Article
  3. Article
  4. Article
  5. Manganese and Lead Exposure and Early Puberty Onset in Children Living near a Ferromanganese Alloy Plant.International journal of environmental research and public health · 2022
    Article
  6. Article
  7. Blood Lead Level in a Paediatric Population of South-Eastern Spain and Associated Risk Factors.International journal of environmental research and public health · 2021
    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 2 institutions in 2 countries.

Mahmoud ZardastMedical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran.
Seyedeh Samira Khorashadi-ZadehStudent Research Committee, Birjand University of Medical Sciences, Birjand, Iran.
Samaneh NakhaeeMedical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran.
Alireza AmirabadizadehMedical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran.
Omid MehrpourMedical Toxicology and Drug Abuse Research Center (MTDRC), Birjand University of Medical Sciences, Birjand, Iran. omid.mehrpour@yahoo.com.au.
Birjand University of Medical Sciences · IRUniversity of Arizona · US

Funding

Birjand University of Medical Sciences 1395.131
6 · The paper itself

Abstract

backgroundLead is a toxic metal that affects almost every organ in the body. Children are more susceptible to lead toxicity because they ingest non-food items (pica), have oral exploratory habits, absorb more substantial amounts of ingested lead compared to adults, and have a developing central nervous system. This study describes venous blood lead concentrations (BLC) in young children living in Birjand, Iran.

methodsA cross-sectional study was performed in 2016 on children 1-7 years of age who were referred to healthcare centers in Birjand City. Demographic information was obtained, and their BLC was tested using atomic absorption spectrometry (AAS).

resultsFour hundred children were tested. Their mean age was 52.37 ± 23.77 months; their mean BLC was 2.49 ± 2.64 μg/dL (median 1.85 μg/dL). Thirty-two (8%) children had a BLC > 5 μg/dL. A logistic regression model revealed that per one unit of increase in age, the chance of an elevated BLC decreased by 3% (OR (95%CI): 0.97 (0.96-0.99), p < 0.01). The risks of an elevated BLC was 61% lower in girls compared to boys (OR (95%CI): 0.39 (0.17-0.92), p = 0.03). Further, per one rate of increase in the BMI, the chance of an elevated BLC was higher (OR (95%CI): 1.13 (1.02-1.24), p = 0.01). Children whose fathers were laborers had higher BLC than those with employee fathers (p = 0.01).

conclusionOf 400 children aged 1-7 years old living in Birjand, Iran, 8% had elevated BLC. BLC correlated with the child 's age, gender, body mass index, and father's occupation.

Indexed as

LeadPicaAdultChildChild, PreschoolCross-Sectional StudiesFemaleHumansInfantIranLogistic ModelsMaleLeadBlood lead concentrationChildrenIranLead toxicity

Identifiers

PMID32938436
PMCPMC7493850
OpenAlexW3087394894

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.