Sunday, April 5, 2009

National/International Incidence of Bipolar Disorder (PSY340) Team Assignment

The lifetime prevalence of bipolar I disorder and bipolar II disorder is estimated at 1.0 and 1.5 percent, with a typical age of onset between 12 and 44 years (Nevid & Rathus, 2005). According to the Surgeon General of the United States of America at any given time 1.7% of the American population is affected by bipolar disorder (Statistics, 2009). Furthermore, Chang et. al. (2005) concluded after a thorough cross-discipline survey of available literature that Switzerland has a prevalence rate of 11% for bipolar affective disorder in young adults, Holland has a 6-month prevalence of mania in 1.9% of adolescents; and that 1.2% of youth in Denmark and 1.7% of adolescents in Finland are hospitalized every year for mania or hypomania. In Australia bipolar affective disorders accounted for 15, 943 hospitalizations from 2001-2002, with an additional 0.7 out of every 10,000 Australians being hospitalized in public psychiatric hospitals in the same time-frame. In addition, bipolar affective disorder was involved in 0.11% of hospital consultant episodes in England, with 90% of hospital consultant episodes requiring hospital admission. Bipolar disorder is considered a rare disorder by Orphanet, an academic organization devoted to the study and treatment of rare diseases, because it affects less than 1 in 2,000 people worldwide. This data suggests that a relatively small cross-section of the population is afflicted by bipolar disorder, but that a disproportionate amount of those afflicted are young adults and adolescents.
Chang K.D., Díez-Suárez A., Escamilla-Canales I., Figueroa-Quintana A., Ortuño F.,
Rapado-Castro M., & Soutullo C.A. (2005). Bipolar disorder in children and adolescents:
International perspective on epidemiology and phenomenology. Bipolar Disorder, 7(6),
497-506. Retrieved April 3, 2009, from PubMed Web site:
Nevid, J.S., & Rathus, S.A. (2005). Psychology and the challenges of life: Adjustment in
the new millennium (9th ed.). Hoboken, NJ: John Wiley & Sons.
Statistics about bipolar disorder. (2009). Retrieved April 3, 2009, from Wrong Diagnosis
Web site:

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