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Diseases » Over-diagnosed conditions » Prevalence

Prevalence Statistics for Types of Over-diagnosed conditions

The information below shows a list of types of Over-diagnosed conditions, with information as to the prevalence of each of these types. Estimates of the people affected are calculated based on the available statistic.

Disease	Prevalence Estimate	US people estimate	Statistic Used for Calculation
Alzheimer's disease	approx 1 in 68 or 1.47% or 4 million people in USA	3,999,999	more than 4 million Americans (CDC); estimated 4 million people in the U.S (NHWIC)
ADHD	approx 1 in 82 or 1.21% or 3.3 million people in USA	3,299,999	3.3 million children have ADD in the USA (NHIS-97); estimated 2 million American children; 3 to 5 percent of all children (NIMH).
Irritable Bowel Syndrome (IBS)	N/A	N/A	No information
Middle ear infection	N/A	N/A	No information
Sinusitis	approx 1 in 7 or 13.60% or 37 million people in USA	37,000,000	37 million annually in the USA; 33 million reported to CDC (NIAID)
Lyme disease	N/A	N/A	No information
Anxiety disorders	N/A	N/A	No information
Depression	approx 1 in 18 or 5.30% or 14.4 million people in USA	14,416,000	estimated 5.3% adults (USSG); 17 million people; approximately 4% of adolescents get seriously depressed (NIMH); annually 12% of women ; 7% of men; lifetime risk of an episode for women 20%. 3-4 million men USA.
Postnatal depression	N/A	N/A	No information

Types of Over-diagnosed conditions

For more information about types of Over-diagnosed conditions, refer to our section on types of Over-diagnosed conditions.

About prevalence:

The medical term 'prevalence' of Over-diagnosed conditions usually refers to the estimated population of people who are managing Over-diagnosed conditions at any given time, whereas the annual diagnosis rate of new cases of Over-diagnosed conditions is called the 'incidence'. For more information on prevalence and incidence statistics, see about prevalence and incidence statistics.