Pending enough primary studies, we invite reviews on this topic to be conducted. Alternatively we will endeavour to conduct our own review to fill this gap in the Library.

March 2022

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The post Prevalence in children appeared first on NeuRA Library.

Prevalence represents the overall proportion of individuals in a population who have the disorder of interest. It is different from incidence, which represents only the new cases that have developed over a particular time-period. Point prevalence is the proportion of individuals in a population who have the disorder at a given point in time, while period prevalence is the proportion of individuals in a population who have the disorder over specific time periods. Lifetime prevalence is the proportion of individuals in a population who have ever had the disorder and lifetime morbid risk also includes those who had the disorder but were deceased at the time of the survey.

What is the prevalence of schizophrenia in elderly people?

Moderate to high quality evidence finds the overall prevalence of schizophrenia and other psychotic disorders in older prisoners (>50 years) is around 5.5%. Moderate quality evidence suggests the prevalence of schizophrenia in elderly men who attempted suicide is also around 5%, which is substantially lower than the prevalence of mood disorders (42%) or substance use disorders (41%) in this population.

April 2022

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The post Prevalence in elderly people appeared first on NeuRA Library.

Prevalence measures the proportion of individuals who have a disorder at a particular point in time (point prevalence) or during a specified period (annual prevalence, lifetime prevalence) and this may vary across regions. It is distinct from incidence, which refers to how many new cases there are per population in a specified time period.

What is the evidence for the prevalence of schizophrenia in forensic settings?

Moderate to high quality evidence suggests the overall prevalence of any psychotic disorder in prisoners is around 3.6%. There were higher prevalence rates in low- to middle-income countries (5.5-6.2%) than in high-income countries (3.5%). The rate of any non-affective psychotic disorder was 15.8 times higher in prisoners in low and middle-income countries than in the general population.

Moderate to high quality evidence finds the prevalence of schizophrenia or other psychotic disorders in older prisoners (> 50 years) is around 5.5%, from studies conducted in the USA, UK, and France.

Among adolescents in juvenile forensic settings, moderate to high quality evidence finds the prevalence rate of any psychotic disorder is 2.7% for males and 2.9% for females.

Among offenders on probation, moderate to low quality evidence finds the prevalence of schizophrenia ranges between 1.7% and 30%.

April 2022

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The post Prevalence in forensic settings appeared first on NeuRA Library.

Prevalence measures the proportion of individuals who have a disorder at a particular point in time (point prevalence) or during a specified period (annual prevalence, lifetime prevalence) and this may vary across regions. It is distinct from incidence, which refers to how many new cases there are per population in a specified time period. Lifetime prevalence is the number of individuals in a population that at some point in their life have experienced schizophrenia compared to the total number of individuals.

What is the evidence for the prevalence of schizophrenia in homeless populations?

Moderate quality evidence suggests the overall prevalence rate of any psychotic disorder in homeless people is around 21%. Moderate to high quality evidence suggests the prevalence of schizophrenia spectrum disorders is around 12.4% in homeless populations in high-income countries. The prevalence rate of schizophrenia is higher in developing countries (22%).

Moderate quality evidence shows rates of schizophrenia in homeless populations varied across US cities, with rates higher in Los Angeles than in New York, which had higher rates than Philadelphia. Rates were generally higher in younger than older age-groups, higher in chronically homeless people, and higher in women than in men.

April 2022

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The post Prevalence in homeless populations appeared first on NeuRA Library.

Pending enough primary studies, we invite reviews on this topic to be conducted. Alternatively we will endeavour to conduct our own review to fill this gap in the Library.

April 2022

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The post Prevalence in indigenous populations appeared first on NeuRA Library.

Pending enough primary studies, we invite reviews on this topic to be conducted. Alternatively we will endeavour to conduct our own review to fill this gap in the Library.

April 2022

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The post Prevalence in inpatients appeared first on NeuRA Library.

Prevalence measures the proportion of individuals who have a disorder at a particular point in time (point prevalence) or during a specified period (annual prevalence, lifetime prevalence) and this may vary across regions. It is distinct from incidence, which refers to how many new cases there are per population in a specified time period. Lifetime prevalence is the number of individuals in a population that at some point in their life have experienced schizophrenia compared to the total number of individuals.

What is the evidence regarding sex differences in prevalence rates of schizophrenia?

Moderate quality evidence found no differences in the overall prevalence of schizophrenia between males and females. There were also similar prevalence rates of any psychotic disorder in male and female adolescents in juvenile detention (2.7% vs. 2.9%). There were similar prevalence rates of schizophrenia in homeless males and females in St Louis and Madrid. However, there were higher prevalence rates of schizophrenia in homeless women than in homeless men in Melbourne, Munich, Baltimore, and Philadelphia.

Please also see the topic on differences in incidence rates of schizophrenia between males and females.

April 2022

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The post Prevalence in males vs. females appeared first on NeuRA Library.

Prevalence measures the proportion of individuals who have a disorder at a particular point in time (point prevalence) or during a specified period (annual prevalence, lifetime prevalence) and this may vary across regions. It is distinct from incidence, which refers to how many new cases there are per population in a specified time period. Lifetime prevalence is the number of individuals in a population that at some point in their life have experienced schizophrenia compared to the total number of individuals.

What is the evidence for prevalence rates in migrant populations?

Moderate quality evidence found increased prevalence of schizophrenia in migrant populations compared to native-born populations.

April 2022

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The post Prevalence in migrants appeared first on NeuRA Library.

Prevalence quantifies the proportion of individuals in a population who have a disease during a specific time-period while incidence refers to the number of new cases of disease that develop in a population during a specific time-period while. In disorders of short duration incidence and prevalence rates may be similar, however with disorders of long duration such as with schizophrenia there can be variation between the two.

What is the evidence regarding prevalence of schizophrenia in refugees?

High quality evidence finds the overall prevalence of psychotic disorders, mostly schizophrenia spectrum, is 1.5% in refugees and asylum seekers. Studies were undertaken in Australia, Germany, Italy, Lebanon, Norway, United Kingdom, and the United States of America. Refugees were from Azerbaijan, former Yugoslavia, Middle East, Africa, Palestine, and Russia.

April 2022

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The post Prevalence in refugees appeared first on NeuRA Library.

Prevalence quantifies the proportion of individuals in a population who have a disease during a specific time period, while incidence refers to the number of new cases of disease that develop in a population during a specific time period. In disorders of short duration, incidence and prevalence rates may be similar, however with disorders of long duration such as with schizophrenia there can be variation between the two.

Does the prevalence of schizophrenia in veteran populations and conflict settings?

Moderate quality evidence suggests the current prevalence of schizophrenia in elderly veterans in the USA is around 11%. Moderate to low quality evidence suggests the prevalence of schizophrenia in conflict settings in East Timor is 0.34% and in South Darfur, Sudan is 4.1%.

April 2022

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The post Prevalence in veterans and conflict settings appeared first on NeuRA Library.