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The results of this pilot study support the hypothesis that light therapy …


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Biology Articles » Health and Medicine » Medicine and Diagnosis » A controlled trial of the Litebook light-emitting diode (LED) light therapy device for treatment of Seasonal Affective Disorder (SAD) » Table 1

Table 1
- A controlled trial of the Litebook light-emitting diode (LED) light therapy device for treatment of Seasonal Affective Disorder (SAD)

SIGH-SAD Outcome Measures at Randomization and after 1, 2, 3 and 4 weeks of treatment.

  Mean SIGH SAD score*
 Mean SIGH SAD score As % of randomization score
 % Participants in remission (SIGH SAD <9)
  Active
 Control
 Active
 Control
 p value
 Active
 Control
 p value
Randomization
 28.0 ± 5.3
 25.1 ± 3.2
 -
 -
 -
 -
 -
 -
Week 1
 18.6 ± 7.9
 19.0 ± 7.2
 67.1 ± 26.7
 74.0 ± 22.5
 0.527
 7.1
 11.1
 0.999
Week 2
 14.9 ± 10.0
 17.9 ± 4.9
 54.5 ± 36.4
 71.7 ± 19.5
 0.208
 28.6
 0.0
 0.127
Week 3
 11.1 ± 10.1
 14.9 ± 4.2
 39.0 ± 30.7
 54.4 ± 17.9
 0.080
 42.9
 11.1
 0.176
Week 4
 8.7 ± 8.4
 13.4 ± 5.4
 29.9 ± 25.4
 54.4 ± 21.8
 0.027**
 57.1
 11.1
 0.040***

Notes: Observed cases analysis: for active treatment n = 14 and for placebo treatment n = 9. * interaction of time and treatment significant in repeated measures ANOVA as noted in text. ** comparison significant at p ≤ 0.05 by t test. *** comparison significant at p ≤ 0.05 by Fisher's exact test.


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