The rate of bipolar disorder diagnoses among young adults decreased between 2004 and 2010 compared to the previous eight-year period. The current study builds on a 2007 report that found an increased rate of bipolar disorder diagnoses among young adults between 1996 and 2004. These findings led many individuals to believe that physicians were overdiagnosing bipolar disorder, the researchers said. The follow-up study, published in Bipolar Disorders, explores whether rates are still rising or falling after 2004.
The researchers used unspecified nationally representative data from the National Hospital Discharge Survey (NHDS) that It is conducted annually by the National Center for Health Statistics. Looking at all diagnoses between 1996 and 2010, researchers found that 6.98% of all hospital inpatients for individuals aged 5 years and over were associated with an initial psychiatric diagnosis. The number of psychiatric hospitalizations increased from 6.76% in 1996 to 7.09% in 2004 to 6.35% in 2010.
Looking at adolescents, the number of psychiatric hospitalizations increased from 18.97% of all adolescent hospitalizations in 2004 to 22.04% in 2010.
Bipolar disorder diagnoses increased among adolescents between 2004 and 2010 but decreased among children. Researchers attribute this change to changes in the rate at which BD NOS/Cyclothymia is diagnosed. The adjusted population rate of bipolar disorder diagnoses among adolescents declined between 2004 and 2010 compared to the previous time period. Researchers attribute the change in diagnosis to the scientific consensus about the phenotype of bipolar disorder diagnosis that occurred around 2004.
Researchers also explored common symptoms of bipolar disorder, including depression. Their findings indicated that “the adjusted population rate of depressive disorder diagnoses among adolescents in the United States initially increased until the mid-2000s and then decreased until 2010. However, the diagnosis of depressive disorders in children of the United States increased among The mid-2000s and 2010s, while the diagnosis of depressive disorders in adults has declined.Study data are also derived from billing claims, which means that some individuals may have multiple admissions.Data also did not include secondary, only primary diagnoses.Trends In Diagnostics Through Time.”
Sherwood SN, Carlson GA, Freeman AJ. The rate of bipolar disorder diagnoses in children decreased in the United States between 2004 and 2010 . Bipolar discord . Published online October 18, 2021. doi: 10.1111/bdi.13145