Personality disorder epidemiology and demographics
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Priyanka Kumari, M.B.B.S[2]
Epidemiology and Demographics
Prevalence
The prevalence of personality disorder in the general community was largely unknown until surveys starting from the 1990s. In 2008 the median rate of diagnosable PD was estimated at 10.6%, based on six major studies across three nations. This rate of around one in ten, especially as associated with high use of services, is described as a major public health concern requiring attention by researchers and clinicians.[1]
The prevalence of individual personality disorders ranges from about 2% to 3% for the more common varieties, such as schizotypal, antisocial, borderline, and histrionic, to 0.5–1% for the least common, such as narcissistic and avoidant.
A screening survey across 13 countries by the World Health Organization using DSM-IV criteria, reported in 2009 a prevalence estimate of around 6% for personality disorders. The rate sometimes varied with demographic and socioeconomic factors, and functional impairment was partly explained by co-occurring mental disorders.[2] In the US, screening data from the National Comorbidity Survey Replication between 2001 and 2003, combined with interviews of a subset of respondents, indicated a population prevalence of around 9% for personality disorders in total. Functional disability associated with the diagnoses appeared to be largely due to co-occurring mental disorders (Axis I in the DSM).[3]
A UK national epidemiological study (based on DSM-IV screening criteria), reclassified into levels of severity rather than just diagnosis, reported in 2010 that the majority of people show some personality difficulties in one way or another (short of threshold for diagnosis), while the prevalence of the most complex and severe cases (including meeting criteria for multiple diagnoses in different clusters) was estimated at 1.3%. Even low levels of personality symptoms were associated with functional problems, but the most severely in need of services was a much smaller group.[4]
There are also some gender differences in the frequency of personality disorders. They are shown in the table below.
| Gender differences in the frequency of personality disorders | |
|---|---|
| Type of personality disorder | Sex |
| Paranoid personality disorder | Male |
| Schizoid personality disorder | Male |
| Schizotypal personality disorder | Male |
| Antisocial personality disorder | Male |
| Borderline personality disorder | Female |
| Histrionic personality disorder | Female |
| Narcissistic personality disorder | Male |
| Avoidant personality disorder | Equal |
| Dependent personality disorder | Female |
| Obsessive–compulsive personality disorder | Male |
Overview
Epidemiology and Demographics
Incidence
- The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
- In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
Prevalence
- The incidence/prevalence of [disease name] is approximately [number range] per 100,000 individuals worldwide.
- In [year], the incidence/prevalence of [disease name] was estimated to be [number range] cases per 100,000 individuals worldwide.
- The prevalence of [disease/malignancy] is estimated to be [number] cases annually.
Case-fatality rate/Mortality rate
- In [year], the incidence of [disease name] is approximately [number range] per 100,000 individuals with a case-fatality rate/mortality rate of [number range]%.
- The case-fatality rate/mortality rate of [disease name] is approximately [number range].
Age
- Patients of all age groups may develop [disease name].
- The incidence of [disease name] increases with age; the median age at diagnosis is [#] years.
- [Disease name] commonly affects individuals younger than/older than [number of years] years of age.
- [Chronic disease name] is usually first diagnosed among [age group].
- [Acute disease name] commonly affects [age group].
Race
- There is no racial predilection to [disease name].
- [Disease name] usually affects individuals of the [race 1] race. [Race 2] individuals are less likely to develop [disease name].
Gender
- [Disease name] affects men and women equally.
- [Gender 1] are more commonly affected by [disease name] than [gender 2]. The [gender 1] to [gender 2] ratio is approximately [number > 1] to 1.
Region
- The majority of [disease name] cases are reported in [geographical region].
- [Disease name] is a common/rare disease that tends to affect [patient population 1] and [patient population 2].
Developed Countries
Developing Countries
References
- ↑ Lenzenweger, Mark F. (2008). "Epidemiology of Personality Disorders". Psychiatric Clinics of North America. 31 (3): 395–403. doi:10.1016/j.psc.2008.03.003. PMID 18638642.
- ↑ Huang, Y. (30 June 2009). "DSM-IV personality disorders in the WHO World Mental Health Surveys". The British Journal of Psychiatry. 195 (1): 46–53. doi:10.1192/bjp.bp.108.058552. PMC 2705873. PMID 19567896. Unknown parameter
|coauthors=ignored (help) - ↑ Lenzenweger, Mark F. (2006). "DSM-IV Personality Disorders in the National Comorbidity Survey Replication". Biological Psychiatry. 62 (6): 553–564. doi:10.1016/j.biopsych.2006.09.019. PMC 2044500. PMID 17217923. Unknown parameter
|coauthors=ignored (help) - ↑ Yang, M. (31 August 2010). "Personality pathology recorded by severity: national survey". The British Journal of Psychiatry. 197 (3): 193–199. doi:10.1192/bjp.bp.110.078956. PMID 20807963. Unknown parameter
|coauthors=ignored (help)