The Use of Exogenous Melatonin in Delayed Sleep Phase Disorder: a Meta-analysis
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SourceSleep, 33, 12, (2010), pp. 1605-1614
Article / Letter to editor
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Study Objectives: To perform a meta-analysis of the efficacy and safety of exogenous melatonin in advancing sleep-wake rhythm in patients with delayed sleep phase disorder. Design: Meta analysis of papers indexed for PubMed, Embase, and the abstracts of sleep and chronobiologic societies (1990–2009). Patients: Individuals with delayed sleep phase disorder. Interventions: Administration of melatonin. Measurements and Results: A meta-analysis of data of randomized controlled trials involving individuals with delayed sleep phase disorder that were published in English, compared melatonin with placebo, and reported 1 or more of the following: endogenous melatonin onset, clock hour of sleep onset, wake-up time, sleep-onset latency, and total sleep time. The 5 trials including 91 adults and 4 trials including 226 children showed that melatonin treatment advanced mean endogenous melatonin onset by 1.18 hours (95% confidence interval [CI]: 0.89–1.48 h) and clock hour of sleep onset by 0.67 hours (95% CI: 0.45–0.89 h). Melatonin decreased sleep-onset latency by 23.27 minutes (95% CI: 4.83 –41.72 min). The wake-up time and total sleep time did not change significantly. Conclusions: Melatonin is effective in advancing sleep-wake rhythm and endogenous melatonin rhythm in delayed sleep phase disorder.
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