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Review: light therapy is an effective treatment for seasonal affective disorder

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Q Is light therapy an effective therapy for seasonal affective disorder and non-seasonal depression?

METHODS

Embedded ImageDesign:

Systematic review of randomised controlled trials (RCTs) with meta-analysis.

Embedded ImageData sources:

PUBMED searched from 1 January 1975 to 25 July 2003. Authors also searched MEDLINE, the Cochrane Collaboration Library, and reference lists of prior reviews/individual articles.

Embedded ImageStudy selection and analysis:

The review included RCTs comparing phototherapy (either bright light therapy or dawn simulation) versus placebo in adults (18–65 years old) with a mood disorder (DSM-III, DSM-III-R, DSM-IV, Rosenthal criteria, or Research Diagnostic Criteria). For inclusion, bright light treatment had to consist of a minimum of four days of 3000 lux hours, with a maximum of 300 lux in the placebo group. Dawn simulation studies were included if they increased light from 0 to …

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