Skip to main content

Advertisement

Table 8 Acrophase Changes (Minutes) by Light Condition and Treatment Timing: Mean (SD) N

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

Acrophase Difference (minutes) Baseline minus Final Morning Evening
  Bright Dim Bright Dim
Illumination 80.69 (69.14) 9 1.53 (39.72) 14 -41.99 (63.48) 11 -28.77 (56.96) 7
Activity 25.84 (40.35) 8 -32.42 (60.00) 13 -0.96 (34.46) 11 -40.88 (48.03) 7
Sleep 39.59 (34.81) 9 -25.90 (42.96) 12 -3.80 (34.74) 11 -24.86 (48.32) 7
ANOVA Sig. (p)   Illumination Activity Sleep
Treatment Condition   0.485 0.003 0.001
Treatment Time   0.001 0.485 0.243
Condition by Time   0.001 0.128 0.054
  1. Note: Positive change is earlier, negative change is later, at the end of treatment.