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. Author manuscript; available in PMC: 2021 Sep 6.
Published in final edited form as: Chronobiol Int. 2020 Sep 6;37(9-10):1404–1411. doi: 10.1080/07420528.2020.1813153

Figure 1. Observed phase shifts by group.

Figure 1.

Phase shifts (in min) were calculated as initial phase minus final phase based on salivary dim light melatonin onset (DLMO) for each participant within each intervention group. Participants excluded from the present analysis due to missing data are indicated by open symbols. C: control; ST + L: 8 h afternoon-evening sleep timing and night shift bright light; ST: 8 h afternoon-evening sleep timing; and SA: ad lib afternoon-evening sleep timing. These data were originally reported in (Chinoy et al. 2016 and Isherwood et al. 2020).