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Table 7 Timing of Saliva Melatonin and Urinary aMT6s at Baseline Mean (SD) N

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

Times are in decimal hours
Saliva Melatonin Depressed Healthy Controls Sig. (T-test, p)
Onset 21.48 (1.67) 28 20.36 (1.98) 22 0.16
Offset 8.76 (2.14) 32 8.78 (1.22) 16 0.873* unequal variance
Duration 11.19 (1.64) 25 11.75 (1.75) 15 0.574
Urinary aMT6s    
Onset 23.95 (3.15) 48 22.22 (2.44) 28 0.015
Offset 9.72 (2.82) 48 8.70 (2.02) 28 0.099
Duration 9.75 (2.48) 48 10.48 (2.21) 28 0.201
Acrophase 4.25 (2.56) 49 3.36 (1.75) 28 0.107
Mesor (ng/hour) 652.12 (911.31) 49 485.40 (377.80) 28 0.36
Horne-Östberg 54.75 (11.45) 81 67.65 (9.38) 23 < 0.001