Journal List > J Korean Neuropsychiatr Assoc > v.52(4) > 1017636

Park, Park, Na, Jung, Jung, Kim, and Lee: Environmental and Familial Risk Factors of Children and Adolescents with Attention Deficit/Hyperactivity Disorder

Abstract

Objectives

The aim of this study was to analyze the environmental and familial variables associated with attention-deficit/hyperactivity disorder (ADHD) in children and adolescents.

Methods

Children and adolescents aged 6-18 with in attention, hyperactivity, or impulsivity who visited the Department of Psychiatry at Soonchunhyang University Bucheon Hospital from April 2006 to April 2012, were interviewed for diagnosis of ADHD. Diagnostic and Statistical Manual of Mental Disorders, 4th edition symptom criteria for ADHD were assessed using a semi-structured interview, the schedule for affective disorders and schizophrenia for school-age children present and lifetime version (K-SADS-PL). Environmental and familial variables were obtained using questionnaires for parents.

Results

In total, 262 children and adolescents with ADHD (n=139) and control subjects (n=123) were recruited. In a multivariate logistic regression model, results of this study showed that maternal psychiatric problem during pregnancy, dystoia, forceps/vacuum use during delivery, and unplanned pregnancy were risk factors for ADHD.

Conclusion

Findings of this study showed an association of some prenatal factors (such as unplanned pregnancy or maternal psychiatric problem during pregnancy) and some perinatal factors (dystocia and forceps/vacuum use during delivery) with increased risk of ADHD. The identified risk factors are environmental, and therefore potentially preventable. Conduct of further prospective studies is needed in order to clarify the potential role of these risk factors for ADHD.

Figures and Tables

Table 1
Demographic characteristics of the subjects
jkna-52-243-i001

All data were presented as mean (±SD) or frequency (%). *: F=2.02, p=0.006, p-value by student's t-test, : χ2=10.45, p=0.001, p-value by chi-square test, : F=0.11, p=0.01, p-value by chi-square test. ADHD: Attention-deficit/hyperactivity disorder, SD: Standard deviation, IQ: Intelligence quotient

Table 2
Neurobiological environmental risk factors between the ADHD and control groups
jkna-52-243-i002

Adjusted for age and sex. *: B=0.63, Wald=4.28, p-value=0.03, : B=1.55, Wald=4.94, p-value=0.02, : B=1.36, Wald=0.48, p-value= 0.006, §: B=1.24, Wald=0.64, p-value=0.05. ADHD: Attention-deficit/hyperactivity disorder, CI: Confidence interval

Table 3
Psychosocial environmental risk factors between the ADHD and control groups
jkna-52-243-i003

Adjusted for age and sex. *: B=0.60, Wald=0.27, p-value=0.02. ADHD: Attention-deficit/hyperactivity disorder, CI: Confidence interval

Table 4
Genetic risk factors between the ADHD and control groups
jkna-52-243-i004

Adjusted for age and sex. *: B=1.52, Wald=4.24, p-value=0.03. ADHD: Attention-deficit/hyperactivity disorder, CI: Confidence interval

Table 5
Odds ratio and 95% CI of risk factors
jkna-52-243-i005

Adjusted for age and sex. CI : Confidence interval

Notes

The authors have no financial conflicts of interest.

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