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Light therapy for improving cognition, activities of daily living, sleep, challenging behaviour, and psychiatric disturbances in dementia

  1. Dorothy Forbes1,*,
  2. Catherine M Blake2,
  3. Emily J Thiessen1,
  4. Shelley Peacock3,
  5. Pamela Hawranik4

Editorial Group: Cochrane Dementia and Cognitive Improvement Group

Published Online: 26 FEB 2014

DOI: 10.1002/14651858.CD003946.pub4


How to Cite

Forbes D, Blake CM, Thiessen EJ, Peacock S, Hawranik P. Light therapy for improving cognition, activities of daily living, sleep, challenging behaviour, and psychiatric disturbances in dementia. Cochrane Database of Systematic Reviews 2014, Issue 2. Art. No.: CD003946. DOI: 10.1002/14651858.CD003946.pub4.

Author Information

  1. 1

    University of Alberta, Faculty of Nursing, Edmonton, Alberta, Canada

  2. 2

    University of Western Ontario, School of Nursing, Health Sciences Addition H022, London, Ontario, Canada

  3. 3

    University of Saskatchewan, Faculty of Nursing, Saskatoon, Saskatoon, Canada

  4. 4

    Athabasca University, Faculty of Graduate Studies and Faculty of Health Disciplines, Athabasca, Alberta, Canada

*Dorothy Forbes, Faculty of Nursing, University of Alberta, level 3, Edmonton Clinic Health Academy, Edmonton, Alberta, T6G1C9, Canada. dorothy.forbes@ualberta.ca.

Publication History

  1. Publication Status: New search for studies and content updated (no change to conclusions)
  2. Published Online: 26 FEB 2014

SEARCH

[Figure 1]
Figure 1. Study flow diagram from update search of November 2012.
[Figure 2]
Figure 2. Forest plot of comparison: 1.1 Cognition following 10 to 42 days of treatment.
[Figure 3]
Figure 3. Forest plot of comparison: 1.2 Sleep onset latency following 2 to 6 weeks of treatment.
[Figure 4]
Figure 4. Forest plot of comparison: 1.3 Total sleep duration following 10 days to 10 weeks of treatment.
[Figure 5]
Figure 5. Forest plot of comparison: 1.4 Total sleep duration following 6 months of treatment.
[Figure 6]
Figure 6. Forest plot of comparison: 1.5 Sleep efficiency following 2 to 10 weeks of treatment.
[Figure 7]
Figure 7. Forest plot of comparison: 1.6 Number of night time awakenings following 2 to 10 weeks of treatment.
[Figure 8]
Figure 8. Forest plot of comparison: 1.7 Agitation following 10 days to 10 weeks of treatment.
[Figure 9]
Figure 9. Forest plot of comparison: 1.8 Psychiatric symptoms following 6 to 10 weeks of treatment.
[Figure 10]
Figure 10. Forest plot of comparison: 1.9 Depression following 2 to 10 weeks of treatment.
[Figure 11]
Figure 11. Methodological quality summary: review authors' judgments about each methodological quality item for each included study.
[Figure 12]
Figure 12. Methodological quality graph: review authors' judgments about each methodological quality item presented as percentages across all included studies.
[Analysis 1.1]
Analysis 1.1. Comparison 1 Bright light versus control, Outcome 1 Cognition following 10-42 days of treatment.
[Analysis 1.2]
Analysis 1.2. Comparison 1 Bright light versus control, Outcome 2 Sleep onset latency following 2-6 weeks of treatment.
[Analysis 1.3]
Analysis 1.3. Comparison 1 Bright light versus control, Outcome 3 Total sleep duration following 10 days to 10 weeks of treatment.
[Analysis 1.4]
Analysis 1.4. Comparison 1 Bright light versus control, Outcome 4 Total sleep duration following 6 months of treatment.
[Analysis 1.5]
Analysis 1.5. Comparison 1 Bright light versus control, Outcome 5 Sleep efficiency following 2-10 weeks of treatment.
[Analysis 1.6]
Analysis 1.6. Comparison 1 Bright light versus control, Outcome 6 Number of night-time awakenings following 2-10 weeks of treatment.
[Analysis 1.7]
Analysis 1.7. Comparison 1 Bright light versus control, Outcome 7 Agitation following 10 days to 10 weeks of treatment.
[Analysis 1.8]
Analysis 1.8. Comparison 1 Bright light versus control, Outcome 8 Psychiatric symptoms following 6 to 10 weeks of treatment.
[Analysis 1.9]
Analysis 1.9. Comparison 1 Bright light versus control, Outcome 9 Depression following 2 to 10 weeks of treatment.