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Table 4 HDRS Scores by Week by Light Condition and Treatment Timing: Mean (SD) N

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

Time Light Morning Mid-day Evening Total
  Bright Dim Bright Dim Bright Dim Bright Dim
Self Report HDRS 17-Baseline 19.76 (8.46) 13 19.20 (6.05) 15 16.80 (6.12) 15 17.31 (5.53) 16 14.00 (6.22) 13 15.22 (3.38) 9 16.85 (7.18)41 17.55 (5.44) 40
Self Report HDRS 17-Final 15.46 (8.49) 13 13.27 (5.78) 15 10.87 (5.87) 15 10.38 (4.79) 16 6.92 (4.13) 13 9.55 (7.92) 9 11.07 (7.12) 41 11.27 (6.02) 40
Blind HDRS 17-Baseline 21.14 (7.86) 7 21.60 (6.35) 10 18.50 (5.40) 10 18.20 (7.30) 10 15.13 (8.18) 8 16.40 (3.78) 5 17.96 (6.95) 27 18.89 (6.35) 27
Blind HDRS 17-Final 16.00 (8.74) 7 11.80 (5.47) 10 10.70 (4.74) 10 12.30 (6.26) 10 6.62 (5.24) 8 9.20 (7.60) 5 11.15 (7.01) 26 11.38 (5.97) 26