Examining the Validity of Cyclothymic Disorder in a Youth Sample: Replication and Extension
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Examining the Validity of Cyclothymic Disorder in a Youth Sample: Replication and Extension Anna Van Meter & Eric A. Youngstrom & Christine Demeter & Robert L. Findling
Published online: 12 September 2012 # Springer Science+Business Media, LLC 2012
Abstract DSM-IV-TR defines four subtypes of bipolar disorder (BP): bipolar I, bipolar II, cyclothymic disorder and bipolar not otherwise specified (NOS). However, cyclothymic disorder in children is rarely researched, or often subsumed in an “NOS” category. The present study tests the replicability of findings from an earlier study, and expands on the criterion validity of cyclothymic disorder in youth. Using the Robins and Guze (1970) framework we examined the validity of cyclothymic disorder as a subtype of BP. Using a youth (ages 5–17) outpatient clinical sample (N0894), participants with cyclothymic disorder (n053) were compared to participants with other BP spectrum disorders (n0399) and to participants with non-bipolar disorders (n0442). Analyses tested differences in youth with cyclothymic disorder and bipolar disorder not otherwise specified who do, and those who do not, have a parent with BP. Compared to youth with nonbipolar disorders, youth with cyclothymic disorder had higher irritability (p
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