Evidence map›Paper›PMID 25939992›Full record

ArticleBMC pediatrics2015

Attention-deficit/hyperactivity symptoms in preschool children from an e-waste recycling town: assessment by the parent report derived from DSM-IV.

Ruibiao Zhang, Xia Huo, Guyu Ho, Xiaojuan Chen, Hongwu Wang, Tianyou Wang, Lian Ma

Abstract read
In one paragraph

Article in BMC pediatrics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 6 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

12 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. The Association between Lead and Attention-Deficit/Hyperactivity Disorder: A Systematic Review.International journal of environmental research and public health · 2019
    Pooled it
  7. Review
  8. Review
  9. Effect of lead exposure from electronic waste on haemoglobin synthesis in children.International archives of occupational and environmental health · 2021
    Article
  10. Article
  11. Article
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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.

Ruibiao ZhangDepartment of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, People's Republic of China. shanyizrb@163.com.
Xia HuoAnalytical Cytology Laboratory and Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, Guangdong, People's Republic of China. xhuo@stu.edu.cn.
Guyu HoTranslational Medicine Center, Shantou University Medical College, Shantou, Guangdong, People's Republic of China. guyuh@yahoo.com.
Xiaojuan ChenAnalytical Cytology Laboratory and Guangdong Provincial Key Laboratory of Infectious Diseases and Molecular Immunopathology, Shantou University Medical College, Shantou, Guangdong, People's Republic of China. 506084313@qq.com.
Hongwu WangDepartment of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, People's Republic of China. wanghongwu-1998@hotmail.com.
Tianyou WangDepartment of Hematology Oncology Center, Beijing Children's Hospital, Capital Medical University, Beijing, People's Republic of China. Wangty999@sohu.com.
Lian MaDepartment of Pediatrics, Second Affiliated Hospital of Shantou University Medical College, Shantou, Guangdong, People's Republic of China. malian8965@sina.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate the attention-deficit/hyperactivity disorder (ADHD) status among preschool-aged children in Guiyu, an electronic waste (e-waste) recycling town in Guangdong, China.

methodsTwo hundred and forty-three parents were surveyed regarding ADHD behaviors in their children (aged 3-7 years) based solely on the DSM-IV criteria. The peripheral blood samples were taken from these children to measure blood lead levels (BLLs) and blood cadmium levels (BCLs).

results12.8% of children met the criteria for ADHD, of which the inattentive, hyperactive/impulsive and combined subtypes were 4.5%, 5.3% and 2.9% respectively. Of all children, 28.0% had BLLs ≥ 10 ug/dL and only 1.2% had BCLs ≥ 2 ug/L, levels conventionally considered high. Either modeled by univariate or multivariable analysis, the three ADHD scores (inattentive, hyperactive/impulsive and total scores) calculated from the Parent Rating Scale showed strong positive correlations with BLLs but not with BCLs. Furthermore, children with high BLLs had 2.4 times higher risk of ADHD than those with low BLLs (OR: 2.4 [95% CI: 1.1-5.2]). When each of the 18 categories on the Parent Rating Scale was separately analyzed, children with high BLLs had significant higher risks for positive ADHD symptoms than those with low BLLs in 12 of the 18 categories (ORs ranged from 2.1 [95% CI: 1.1-3.9] to 3.6 [95% CI: 1.7-7.5]).

conclusionsThis study suggests that environmental lead contamination due to e-waste recycling has an impact on neurobehavioral development of preschool children in Guiyu.

Indexed as

Waste Disposal FacilitiesAttention Deficit Disorder with HyperactivityCadmiumChildChild, PreschoolChinaCross-Sectional StudiesDiagnostic and Statistical Manual of Mental DisordersEnvironmental ExposureEnvironmental PollutantsFemaleHumansLeadMalePrevalenceCadmiumEnvironmental PollutantsLead

Identifiers

PMID25939992
PMCPMC4429982

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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.