Blood lead, parental marital status and the risk of attention-deficit/hyperactivity disorder in elementary school children: A longitudinal study
- Authors
- Choi, Won-Jun; Kwon, Ho-Jang; Lim, Myung Ho; Lim, Ji-Ae; Ha, Mina
- Issue Date
- Feb-2016
- Publisher
- ELSEVIER IRELAND LTD
- Keywords
- Attention-deficit/hyperactivity disorder; Lead; Parental marital status; Interaction; Longitudinal
- Citation
- PSYCHIATRY RESEARCH, v.236, pp.42 - 46
- Journal Title
- PSYCHIATRY RESEARCH
- Volume
- 236
- Start Page
- 42
- End Page
- 46
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/8554
- DOI
- 10.1016/j.psychres.2016.01.002
- ISSN
- 0165-1781
- Abstract
- The aim of this study was to investigate the blood lead level and parental marital status that might influence the development of attention-deficit/hyperactivity disorder (ADHD) symptoms in school-aged children. The participants in the survey included elementary school children, and they were followed up biennially. The participants' parents or caregivers were administered a questionnaire including ADHD rating scale. Among 2967 who were not suspected to have ADHD at baseline survey, 2195 children who took follow-up test for ADHD were evaluated. The incidence rate of suspected ADHD was 5.0% (107 cases) during the two years of the follow-up period. The geometric mean blood lead level was 1.56 mu g/dL. Relative risk ratio for ADHD was estimated using logistic regression analysis. After adjustment for potential confounders, ADHD developed more frequently in children with blood lead levels of >2.17 mu g/dL (highest quartile) (RR 1.552, 95% CI 1.002-2.403) and in children with a single parent (RR 1.805, 95% CI 1.002-3.254). The RR was 3.567 (95% CI 1.595-7.980) in children with relatively high blood lead levels ( >2.17 mu g/dL) from single-parent families, compared with those with low blood lead and a two-parent family. The ADHD risk in association with blood lead level was modified by family status. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
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