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Table 2 Expectations for Improvement in Sleep and Mood

From: Bright light treatment of depression for older adults [ISRCTN55452501]

100 mm Visual Analog Scale, 0 = Worse 100 = Better
Measure Sleep Mood
Light Bright Dim Bright Dim
Time Initial Final Initial Final Initial Final Initial Final
N 40 40 38 38 40 40 38 38
Mean 71.4 71.2 68.7 63.5 72.2 73.4 72.3 68.3
SD 15.3 14.7 13.5 21.6 15.5 13.4 15 21