Bipolar disorder prevalence: a systematic review and meta-analysis of the literature
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
;
37(2): 155-161, 12/05/2015. tab, graf
Article
in English
| LILACS
| ID: lil-748983
ABSTRACT
Objective:
Bipolar disorder (BD) is common in clinical psychiatric practice, and several studies have estimated its prevalence to range from 0.5 to 5% in community-based samples. However, no systematic review and meta-analysis of the prevalence of BD type 1 and type 2 has been published in the literature. We carried out a systematic review and meta-analysis of the lifetime and 1-year prevalence of BD type 1 and type 2 and assessed whether the prevalence of BD changed according to the diagnostic criteria adopted (DSM-III, DSM-III-R vs. DSM-IV).Methods:
We searched MEDLINE, Scopus, Web of Science, PsycINFO, and the reference lists of identified studies. The analyses included 25 population- or community-based studies and 276,221 participants.Results:
The pooled lifetime prevalence of BD type 1 was 1.06% (95% confidence interval [95%CI] 0.81-1.31) and that of BD type 2 was 1.57% (95%CI 1.15-1.99). The pooled 1-year prevalence was 0.71% (95%CI 0.56-0.86) for BD type 1 and 0.50% (95%CI 0.35-0.64) for BD type 2. Subgroup analysis showed a significantly higher lifetime prevalence of BD type 1 according to the DSM-IV criteria compared to the DSM-III and DSM-IIIR criteria (p < 0.001).Conclusion:
This meta-analysis confirms that estimates of BD type 1 and type 2 prevalence are low in the general population. The increase in prevalence from DSM-III and DSM-III-R to DSM-IV may reflect different factors, such as minor changes in diagnostic operationalization, use of different assessment instruments, or even a genuine increase in the prevalence of BD. .
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Bipolar Disorder
Type of study:
Prevalence study
/
Prognostic study
/
Risk factors
/
Systematic reviews
Limits:
Adult
/
Aged
/
Aged80
/
Humans
Language:
English
Journal:
Braz. J. Psychiatry (São Paulo, 1999, Impr.)
Journal subject:
Psychiatry
Year:
2015
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Fundação Oswaldo Cruz/BR
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