48 Questions
What is the estimated prevalence of ADHD in school-age children?
8 to 11 percent
What was the prevalence of parent-reported diagnosis of ADHD in children aged 4 to 17 years in the 2011 National Survey of Children's Health?
11 percent
What is the male to female ratio for the predominantly hyperactive type of ADHD?
4:1
What is the prevalence of ADHD among 11 to 14-year-olds?
14.3 percent
What is the estimated prevalence of ADHD in adults aged 18 to 44 years in the US?
4.4 percent
What was the prevalence of ADHD among 18 to 44 year olds in ten countries in the Americas, Europe, and Middle East, according to a World Health Organization survey?
3.4 percent
What is the prevalence of ADHD in higher-income countries among 18 to 44 year olds?
4.4 percent
Approximately what proportion of children are diagnosed with ADHD before age six years?
1/3
What is the prevalence of ADHD in 4- to 10-year-olds?
7.7 percent
What is the estimated prevalence of ADHD in girls according to the 2011 National Survey of Children's Health?
6.7 percent
What was the prevalence of a parent-reported diagnosis of ADHD in the 2011 National Survey of Children's Health among children aged 4 to 17 years?
11 percent
What is the estimated prevalence of ADHD in 15- to 17-year-olds?
15.1 percent
What is the imbalance between the norepinephrine and dopamine systems in the prefrontal cortex in patients with ADHD?
Decrease in inhibitory dopaminergic activity and increase in norepinephrine activity
Which prenatal factor is NOT strongly suggested to play a role in ADHD?
Prenatal exposure to caffeine
What is the most common comorbidity in children with ADHD?
ODD
What are the core symptoms of ADHD according to DSM-5?
Hyperactivity/Impulsivity and Inattention
Which presentation of ADHD is characterized by meeting both Criterion A1 (inattention) and Criterion A2 (hyperactivity/impulsivity) for the past 6 months?
Combined presentation
What is the current severity level if symptoms result in marked impairment in social or occupational functioning?
Severe
Which rating scale is specifically designed for assessing ADHD in adults?
Connors Adult ADHD Rating Scales
What is the specified age range for the NICHQ Vanderbilt Assessment Scales?
4 years or higher
What is the specified age range for the Conners Comprehensive Behavior Rating Scales?
6 years or higher
What is the most common presentation of ADHD in adults?
Predominantly inattentive presentation
What is the specified code for the combined presentation of ADHD in the DSM-5?
314.01 (F90.2)
What is the specified code for the predominantly hyperactive/impulsive presentation of ADHD in the DSM-5?
314.01 (F90.1)
ADHD prevalence in school-age children is estimated to be between 8 and 11 percent.
True
The prevalence of ADHD in boys is 15.1% according to the 2011 National Survey of Children's Health.
True
The prevalence of ADHD may increase with increasing age, reaching 14.0% in 15- to 17-year-olds.
True
ADHD prevalence in adults is 4.4% among 18 to 44 year olds in the US.
True
According to a World Health Organization survey, the prevalence of ADHD in adults aged 18 to 44 years is 3.4% in ten countries in the Americas, Europe, and Middle East.
True
The prevalence of ADHD is higher in boys than in girls, with a ratio of 4:1 for the predominantly hyperactive type.
True
Approximately 1/3 of children are diagnosed with ADHD before age six years.
True
ADHD prevalence in lower-income countries is 1.9%.
False
ADHD prevalence in 4- to 10-year-olds is 7.7%.
False
ADHD prevalence in higher-income countries is 4%.
True
The prevalence of a parent-reported diagnosis of ADHD (ever) among children aged 4 to 17 years in the United States was estimated to be 11% in the 2011 National Survey of Children's Health.
True
ADHD is more common in boys than girls, with a ratio of 2:1 for the predominantly inattentive type.
False
ADHD is primarily caused by an imbalance between the norepinephrine and dopamine systems in the prefrontal cortex
True
ADHD has been associated with an increase in dopamine transporter density in patients compared to healthy controls
True
Prenatal exposure to alcohol is not a factor associated with ADHD
False
ADHD predominantly inattentive presentation is characterized by meeting Criterion A1 (inattention) but not Criterion A2 (hyperactivity/impulsivity) for the past 6 months
True
ADHD predominantly hyperactive/impulsive presentation is characterized by meeting Criterion A2 (hyperactivity-impulsivity) but not Criterion A1 (inattention) for the past 6 months
True
ADHD combined presentation is characterized by meeting both Criterion A1 (inattention) and Criterion A2 (hyperactivity/impulsivity) for the past 6 months
True
ADHD can be in partial remission if full criteria were previously met, fewer than the full criteria have been met for the past 6 months, and the symptoms still result in impairment in social, academic, or occupational functioning
True
ADHD is primarily a childhood disorder and does not significantly affect adults
False
ADHD core symptoms include excessive fidgetiness, difficulty remaining seated, and excessive talking
True
ADHD core symptoms include failure to provide close attention to detail, difficulty organizing tasks, and forgetfulness in routine activities
True
ADHD is not associated with any known comorbidities
False
ADHD assessment in adults can be done using the Connors Adult ADHD Rating Scales
True
Test your knowledge of ADHD prevalence in kids with this informative quiz. Explore the varying rates of ADHD in different populations and the estimated prevalence in school-age children. See how much you know about the statistics and research findings related to ADHD diagnosis in children.
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