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


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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