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Table 1 aMT6s acrophase and measures of circadian malsynchronization and phase dispersion in older (n = 60, ages 60–79) and young volunteers (n = 30, ages 20–40), mean and SE.

From: Circadian phase-shifting effects of a laboratory environment: a clinical trial with bright and dim light

Age Group Baseline aMT6s Acrophase Final aMT6s Acrophase Baseline Circadian Malsynch. Final Circadian Malsynch. Baseline Circadian Dispersion Final Circadian Dispersion
Older 4.01 ± 0.25 4.68 ± 0.28 1.57 ± 0.16 2.19 ± 0.19 1.53 ± 0.15 1.60 ± 0.18
Young 4.14 ± 0.23 5.07 ± 0.28 0.69 ± 0.11 1.09 ± 0.23 1.04 ± 0.12 1.10 ± 0.20