Admixture analysis of age at onset in bipolar disorder
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- 作者：Federica Tozzi ; Mirko Manchia ; Nicholas W. Galwey ; Giovanni Severino ; Maria Del Zompo ; Richard Day ; Keith Matthews ; John Strauss ; James L. Kennedy ; Peter McGuffin ; John B. Vincent ; Anne Farmer ; Pier ; r
- 关键词：Affective disorders ; Age at onset ; Admixture analysis ; Suicide
- 刊名：Psychiatry Research
- 出版年：2011
- 出版时间：30 January 2011
- 年：2011
- 卷：185
- 期：1-2
- 页码：27-32
- 全文大小：329 K
文摘
The aim of this study was to identify whether age at onset (AAO) identifies Bipolar Disorder (BD) subtypes, and to test whether the subgroups were confirmed by different clinical profiles. Admixture analysis was applied to determine a model that best fit the observed distribution of AAO in 964 BD patients. Three distributions of AAO were identified, and age means were 16.1 (S.D. 4.2), 25.4 (S.D. 2.5) and 32.2 (S.D. 9.5) years. A significant increased rate of suicide attempts, Bipolar I (BD I) caseness, and depressive onset was observed in the early-onset group when compared to those with later-onset by means of χ2. Findings from extant studies and our results are remarkably consistent in showing that BD can be subdivided into three groups based on AAO distributions, and that early-onset is associated with higher rates of suicide attempts.