Figure 1
From: Validation of the Sleep Regularity Index in Older Adults and Associations with Cardiometabolic Risk
Panel A: Relationship between SRI and TST and illustration of the effect of daily sleep/wake patterns on SRI using four example subjects. Panels B and C: Daily schedules for two irregular sleepers. Panels D and E: Daily schedules for a regular sleeper and a participant not in either group. Results from the current analysis are shown, but the design of this figure is based on a similar figure created by Phillips et al.19.
