DISABILITY STATISTICS - IAAP CPACC BODY OF
KNOWLEDGE [2025] EXAM QUESTIONS WITH COMPLETE
SOLUTIONS
What percentage of the world population have low vision? - CORRECT ANSWER-✔✔✅3.5%
How common is red-green blindness among people with Northern European heritage? - CORRECT ANSWER-
✔✔✅1 in 12 for men, and 1 in 200 for women.
How common is blue-yellow blindness among men and women? - CORRECT ANSWER-✔✔✅1 in 10,000
How common is Blue Cone Monochromacy? - CORRECT ANSWER-✔✔✅1 in 100,000
What sex does Blue Cone Monochromacy affect the most? - CORRECT ANSWER-✔✔✅Male
What percentage of the world population is Deaf or Hard of Hearing? - CORRECT ANSWER-✔✔✅6.1%
How many people in the world are Deaf or Hard of Hearing? - CORRECT ANSWER-✔✔✅466 million
What percentage of the world population has Auditory Processing Disorder? - CORRECT ANSWER-✔✔✅5%
What percentage of the world population is Deaf-Blind? - CORRECT ANSWER-✔✔✅Between 0.2% and 2%
What percentage of chilren have speech disorders? - CORRECT ANSWER-✔✔✅5%
How many people in USA have aphasia? - CORRECT ANSWER-✔✔✅2 million
What percentage of the population is affected by selective mutism? - CORRECT ANSWER-✔✔✅Between 0.47%
and 0.76%
What percentage of the world population have Rheumatoid Arthritis? - CORRECT ANSWER-✔✔✅1%.
What percentage of world adult population is affected by obesity? - CORRECT ANSWER-✔✔✅39 - 40%
What percentage of the world population have intellectual disability? - CORRECT ANSWER-✔✔✅1 - 3% or 200
million people
What percentage of the world population have dyslexia? - CORRECT ANSWER-✔✔✅3 - 5%
What percentage of the population have dyscalculia? - CORRECT ANSWER-✔✔✅3 - 6%
What percentage of the population is affected by ADHD? - CORRECT ANSWER-✔✔✅11%
What percentage of adults will have a seizure at some point of their lives? - CORRECT ANSWER-✔✔✅2%
What percentage of people with epilepsy have photosensitive epilepsy? - CORRECT ANSWER-✔✔✅2%
What is the most prevalent mental health disorder? - CORRECT ANSWER-✔✔✅Anxiety Disorder
What is the prevalence of anxiety disorders? - CORRECT ANSWER-✔✔✅2.5 - 7%
How many children have mental health problems, from age of 10 to 19? - CORRECT ANSWER-✔✔✅20%
What percentage the world's population is comprised of people with disabilities? - CORRECT ANSWER-
KNOWLEDGE [2025] EXAM QUESTIONS WITH COMPLETE
SOLUTIONS
What percentage of the world population have low vision? - CORRECT ANSWER-✔✔✅3.5%
How common is red-green blindness among people with Northern European heritage? - CORRECT ANSWER-
✔✔✅1 in 12 for men, and 1 in 200 for women.
How common is blue-yellow blindness among men and women? - CORRECT ANSWER-✔✔✅1 in 10,000
How common is Blue Cone Monochromacy? - CORRECT ANSWER-✔✔✅1 in 100,000
What sex does Blue Cone Monochromacy affect the most? - CORRECT ANSWER-✔✔✅Male
What percentage of the world population is Deaf or Hard of Hearing? - CORRECT ANSWER-✔✔✅6.1%
How many people in the world are Deaf or Hard of Hearing? - CORRECT ANSWER-✔✔✅466 million
What percentage of the world population has Auditory Processing Disorder? - CORRECT ANSWER-✔✔✅5%
What percentage of the world population is Deaf-Blind? - CORRECT ANSWER-✔✔✅Between 0.2% and 2%
What percentage of chilren have speech disorders? - CORRECT ANSWER-✔✔✅5%
How many people in USA have aphasia? - CORRECT ANSWER-✔✔✅2 million
What percentage of the population is affected by selective mutism? - CORRECT ANSWER-✔✔✅Between 0.47%
and 0.76%
What percentage of the world population have Rheumatoid Arthritis? - CORRECT ANSWER-✔✔✅1%.
What percentage of world adult population is affected by obesity? - CORRECT ANSWER-✔✔✅39 - 40%
What percentage of the world population have intellectual disability? - CORRECT ANSWER-✔✔✅1 - 3% or 200
million people
What percentage of the world population have dyslexia? - CORRECT ANSWER-✔✔✅3 - 5%
What percentage of the population have dyscalculia? - CORRECT ANSWER-✔✔✅3 - 6%
What percentage of the population is affected by ADHD? - CORRECT ANSWER-✔✔✅11%
What percentage of adults will have a seizure at some point of their lives? - CORRECT ANSWER-✔✔✅2%
What percentage of people with epilepsy have photosensitive epilepsy? - CORRECT ANSWER-✔✔✅2%
What is the most prevalent mental health disorder? - CORRECT ANSWER-✔✔✅Anxiety Disorder
What is the prevalence of anxiety disorders? - CORRECT ANSWER-✔✔✅2.5 - 7%
How many children have mental health problems, from age of 10 to 19? - CORRECT ANSWER-✔✔✅20%
What percentage the world's population is comprised of people with disabilities? - CORRECT ANSWER-
