Objective To know about the prevalence of attention deficit hyperactivity disorder(ADHD) in preschoolers, and to analyze the association between family socioeconomic status and ADHD symptoms in preschoolers.Methods A total of 1 142 children aged 4~7 and their parents were recruited from 7 kindergartens in rural and urban areas by convenient cluster sampling. ADHD symptoms were assessed by ADHD Rating Scale Ⅳ-Preschool Version, and parents were requested to fill out the questionnaire. Univariate and multivariate Logistic regression analysis was applied to analyze the data.Results The overall prevalence of ADHD in preschoolers was 7.01%, and 7.38% for boys, 6.56% for girls. The prevalence of ADHD in rural areas was 7.99%, while 6.67% in urban areas. Multivariate Logistic regression showed that girls and children whose father was older and with more book tended to have fewer ADHD symptoms. In addition, children with higher annual living cost after three years old showed more ADHD symptoms in preschool period. However, the association was only obvious in children from urban areas, and children in rural areas showed opposite results.Conclusions Family socioeconomic status, especially the living cost for children, have a significant association with ADHD symptoms in preschoolers. Furthermore, the differences on economic disparities between urban and rural areas and among children at different age stages, play an important mediating effect on the association between family socioeconomic status and ADHD symptoms.
Key words
attention deficit hyperactivity disorder /
preschooler /
socioeconomic status
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