Figure 3.

Month-to-month variation in well-being, behavior, and sleeping problems.

Estimated marginal means ± Confidence Interval (CI, vertical lines). Scores for bi- and unimodal seasonalities were calculated as a sum of differences between retrospective reports for a particular month of feeling worse and best, least and most energetic, and socializing least and most (a), gain most and lose most weight, eat most and least, and sleep most and least (b). Problems with sleep were scored as a sum of retrospective reports of difficulty staying asleep, difficulty falling asleep, premature awakening, and daytime sleepiness (c). Refer statistical results on triple interactions from rANCOVAs in Table 7.