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Objective and subjective sleep in patients with non-seasonal major depressive disorder and eveningness – Results from a randomized controlled trial of bright light therapy
Sleep patterns and feelings in people with non-seasonal depression and evening preference during bright light therapy
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Abstract
A total of 93 adults participated in a trial examining sleep patterns and depression severity.
- Significant correlations exist between subjective sleep timings and chronotype with objective sleep measurements.
- Patients with more severe depressive symptoms tend to underestimate their total sleep time.
- Bright light therapy (BLT) resulted in a greater advance in the time to fall asleep and rise time compared to dim red light therapy.
- Both treatment groups showed improvements in wake after sleep onset, total sleep time, and sleep efficiency over time.
- No significant differences were found between the two groups in objective sleep measurements after treatment.
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