The durability of cognitive behavioral therapy for insomnia in patients with chronic pain.

Sleep Disord · 2012 · PMC3581267 · PMID 23470897

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marginally significantno p-value reported

Although a marginally significant difference was found, with activity increasing pre- to posttreatment, the clinical relevance is unknown.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.