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. Author manuscript; available in PMC: 2023 Dec 1.
Published in final edited form as: Sleep Health. 2022 Oct 22;8(6):571–579. doi: 10.1016/j.sleh.2022.08.009

Figure 2:

Figure 2:

Graphical representation of the DV ~ day linear mixed models (LMM) for (a) stress (reported in units), (b) negative affect (PANASt Negative; reported in units), (c) depression (modified PHQ-9c; reported in units), (d) positive affect (PANASt Positive; reported in units), and (e) alcohol consumption (reported in number of drinks). Given typical differences in weekends vs. weekdays, alcohol consumption was adjusted for the day of the week. US residents are presented in blue with large markers, non-US residents are presented in gold with small markers. The dotted horizontal lines show the intercept (i.e., the mean of daily averages) for each group. The data points show the model estimate for the mean of each group (coefficient + intercept) and the confidence interval (CI) around the coefficient. Where the CI does not overlap the group intercept, that day differed significantly from the grand mean (p < 0.05). The date on the x-axis is red if the day*group interaction was significant in a DV ~ day*group model (i.e., if the impact of that day differed between the groups) at a level of p < 0.05. Blue asterisks mark days in which US residents (but not non-US residents) significantly differed from the US resident mean. Gold triangles mark days in which non-US residents (but not US residents) significantly differed from the non-US resident mean. Green stars mark the days in which both US and non-US residents differed from their respective means. Top and bottom rows of figures include day-of-week anchors along x-axis: TH = Thursday, TU = Tuesday, FR = Friday. Dates in which there were fewer than 30 usable non-US participant responses for a variable were omitted from analyses. Election day is highlighted by the dark gray-filled box. The day the election was called by the Associated Press is highlighted by the light gray open box. t PANAS = Positive and Negative Affect Schedule c The Patient Health Questionnaire-9 (PHQ-9) was modified to remove the question assessing suicidality due to IRB considerations. The remaining 8 questions were summed as usual to calculate the modified PHQ-9 score.