Prevalence quantifies the proportion of individuals in a population who have a disorder during a specific time period, while incidence refers to the number of new cases 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 bipolar disorder, there can be variation between the two. Current, or ‘point’ prevalence is the proportion of individuals who have the disorder at a given point in time, ‘period’ prevalence measures the proportion of individuals who have the disorder during a specified period (e.g. one year), a ‘lifetime’ prevalence is the proportion of individuals in the population who have ever had the disorder.

What is the evidence on prevalence of bipolar disorder in children?

Moderate quality evidence finds the current prevalence of bipolar spectrum disorders in children is around 4%. Rates were higher in studies using broad diagnostic measures (8.6%), in older samples (8.3%), and in studies using lifetime rates (6.4%).

October 2021

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Prevalence quantifies the proportion of individuals in a population who have a disorder during a specific time period, while incidence refers to the number of new cases 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 bipolar disorder, there can be variation between the two. Current, or ‘point’ prevalence is the proportion of individuals who have the disorder at a given point in time, ‘period’ prevalence measures the proportion of individuals who have the disorder during a specified period (e.g. 1 year), a ‘lifetime’ prevalence is the proportion of individuals in the population who have ever had the disorder.

What is the evidence on prevalence of bipolar disorder in elderly people?

Moderate to high quality evidence finds the current prevalence of bipolar spectrum disorders in elderly people in Canada and France is around 0.5%, and the lifetime prevalence of bipolar spectrum disorders in elderly people in Canada and the USA is around 1%. No reviews were identified that assessed rates in elderly people in other regions.

Moderate quality evidence finds the current prevalence of bipolar disorder in elderly veterans is around 4%, and moderate to high quality evidence finds the current prevalence of bipolar disorder in older prisoners is around 4.5%.

October 2021

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Prevalence quantifies the proportion of individuals in a population who have a disorder during a specific time period, while incidence refers to the number of new cases 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 bipolar disorder, there can be variation between the two. Current, or ‘point’ prevalence is the proportion of individuals who have the disorder at a given point in time, ‘period’ prevalence measures the proportion of individuals who have the disorder during a specified period (e.g. 1 year), a ‘lifetime’ prevalence is the proportion of individuals in the population who have ever had the disorder.

What is the evidence regarding prevalence of bipolar disorder in forensic settings?

Moderate to high quality evidence finds the prevalence of bipolar disorder in older prisoners (> 50 years) is around 4.5%, from studies conducted in the USA.

No reviews were identified that assessed rates in other age groups or regions.

October 2021

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Prevalence quantifies the proportion of individuals in a population who have a disease during a specific time period. Many studies have reported a high prevalence of various health problems, including mental health problems, among homeless people. The rate of bipolar disorder in this population may be difficult to measure due to diversity between studies in the definitions of homelessness and the diagnostic criteria used.

What is the evidence regarding prevalence of bipolar disorder in homeless populations?

Moderate quality evidence finds the prevalence of bipolar disorder in homeless people is around 11.4%. Rates were lowest in high-income countries (4%) and were similar across diagnostic instruments used.

April 2022

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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.

October 2021

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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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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.

October 2021

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Primary care settings typically represent the first step for treatment-seeking individuals with mood symptoms. Prevalence quantifies the proportion of individuals in a population who have a disorder during a specific time period, while incidence refers to the number of new cases 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 bipolar disorder, there can be variation between the two. Current, or ‘point’ prevalence is the proportion of individuals who have the disorder at a given point in time, ‘period’ prevalence measures the proportion of individuals who have the disorder during a specified period (e.g. 1 year), a ‘lifetime’ prevalence is the proportion of individuals in the population who have ever had the disorder.

What is the evidence on prevalence of bipolar disorder in primary care settings?

Moderate quality evidence suggests the overall prevalence of bipolar spectrum disorders in primary care settings is around 1.9%, with current prevalence around 3.7%, and 12 month prevalence around 0.7%. Rates were highest in North America, in recent publications, and in younger samples.

October 2021

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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 (e.g., at one-month post-trauma), while period prevalence is the proportion of individuals in a population who have the disorder over specific time periods (e.g., one to two months post-trauma). 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 bipolar disorder in problem gamblers?

Moderate quality evidence finds the prevalence of bipolar disorder in people with problem gamling is around 9%. This is lower than in people with nicotine dependence (56.4%), major depressive disorders (29.9%), alcohol use disorders (21.2%), anxiety disorders (17.6%), social phobia (14.9%), generalised anxiety disorder (14.4%), panic disorder (13.7%), post-traumatic stress disorder (12.3%), cannabis use disorder (11.5%), attention-deficit hyperactivity disorder (9.3%), and adjustment disorder (9.2%).

October 2021

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Prevalence quantifies the proportion of individuals in a population who have a disorder during a specific time period, while incidence refers to the number of new cases 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 bipolar disorder, there can be variation between the two. Current, or ‘point’ prevalence is the proportion of individuals who have the disorder at a given point in time, ‘period’ prevalence measures the proportion of individuals who have the disorder during a specified period (e.g. 1 year), a ‘lifetime’ prevalence is the proportion of individuals in the population who have ever had the disorder.

What is the evidence on prevalence of bipolar disorder in veterans?

Moderate quality evidence suggests the current prevalence of bipolar spectrum disorders in elderly veterans in the USA is around 4%.

No reviews were identified that assessed rates in veterans in other regions.

October 2021

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