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Q In adults with insomnia, is behaviour therapy effective?
Clinical impact ratings GP/FP/Primary care ★★★★★★☆ Psychiatry ★★★★★★★ Geriatrics ★★★★★☆☆
PubMed, PsycINFO, and Social Science Citation Index (1966–2004); the Cochrane Controlled Trials Register; and reference lists.
Study selection and assessment:
randomised controlled trials (RCTs) that were published in English language, peer reviewed journals; enrolled adults with a diagnosis of primary insomnia; included ⩾1 cognitive behaviour therapy (CBT) intervention; included ⩾1 of 5 sleep outcomes; and reported data that were not markedly non-normal (ie, mean was larger than the standard deviation).
23 RCTs met the selection criteria. Study quality was assessed using the recommendations of the Cochrane Library. …
For correspondence: Dr M R Irwin, UCLA Neuropsychiatric Institute, Los Angeles, CA, USA.
Sources of funding: in part, General Clinical Research Centers Program and the Cousins Center for Psychoneuroimmunology.