Positive effect of timed blue-enriched white light on sleep and cognition in patients with mild and moderate Alzheimer's disease.

We found that there was a tendency of reduction in KNPI-Q(S) scores at 4-week follow-up after timed light interventions compared to those at baseline (time effect, OR: 0.07, p = 0.054), though it did not reach statistical significance (Table 4 ).

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