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  • Title: Insomnia and hypersomnia associated with depressive phenomenology and comorbidity in childhood depression.
    Author: Liu X, Buysse DJ, Gentzler AL, Kiss E, Mayer L, Kapornai K, Vetró A, Kovacs M.
    Journal: Sleep; 2007 Jan; 30(1):83-90. PubMed ID: 17310868.
    Abstract:
    STUDY OBJECTIVES: To examine sleep disturbance (insomnia and hypersomnia) and associated clinical profiles among depressed children and adolescents in terms of illness history, depressive severity, depressive phenomenology, and psychiatric comorbid disorders. DESIGN: Clinical profiles from standardized clinical evaluations were compared. SETTING: Twenty-three mental health facilities in Hungary between April 2000 and December 2004. PATIENTS AND MEASUREMENTS: Five hundred fifty-three children with a current episode of Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition major depressive disorder: 55% were boys, mean age was 11.7 years (SD = 2.0, range = 7.3-14.9), and 94% were Caucasian. Sleep and depressive symptoms were assessed with the Interview Schedule for Children and Adolescents-Diagnostic Version. INTERVENTIONS: N/A. RESULTS: Of the total sample, 72.7% had sleep disturbance: 53.5% had insomnia alone, 9.0% had hypersomnia alone, and 10.1% had both disturbances. Depressed girls were more likely to have sleep disturbance than boys (77.0% vs 69.2%, p < .05), but age had no significant effects. Compared with children without sleep disturbance, sleep-disturbed children were more severely depressed and had more depressive symptoms and comorbid anxiety disorders. Across sleep-disturbed children, those with both insomnia and hypersomnia had a longer history of illness, were more severely depressed, and were more likely to have anhedonia, weight loss, psychomotor retardation, and fatigue than were those with either insomnia or hypersomnia. CONCLUSION: Clinical profiles differ between depressed children without and with sleep disturbance, with those presenting insomnia plus hypersomnia being most severely depressed. Differentiating depressed children with different sleep disturbances may have important implications for research efforts on the etiology and therapeutics of child depression.
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