After completion of the initial Demographic Survey, participants were enrolled to begin receiving our daily survey assessment. To reduce participant burden, two versions of our daily survey were utilized during the assessment period: the Short Version and the Full Version. To establish a baseline of all metrics included in the daily surveys, participants received the Full Survey for at least three days following completion of the demographic survey. The Full Survey was then sent to all participants on randomly selected days 2 days/week, with the Short Survey sent the remaining 5 days/week. To enhance the quality of the data reported, participants were instructed not to try to make up surveys on days that they missed. The Short and Full Version of the daily surveys are described in detail below.

The Short Version of our daily survey included several questions relevant to the duration and quality of sleep, including bedtime, sleep attempt time, sleep latency, time spent awake after sleep onset, morning wake time, and the time participants got out of bed. We also collected daily dream reports, descriptions of activity and exercise, time spent virtually socializing, alcohol consumption, quarantine status, COVID-19 symptoms and diagnosis, and their subjective experience of overall stress. All questions within the Short Version of the survey were optional and participants were asked to respond to any that they were able to given their time and energy that day.

The Full Version of the survey included all questions from the Short Version, as well as questions related to their experience of worry on factors related to COVID-19 (i.e., individual health, health of family, friends, and community, public health, and financial impact), perception of social isolation, current mood using the Positive and Negative Affect Schedule (PANAS)15, and symptoms of depression using a modified version of the Patient Health Questionnaire-9 (PHQ-9)16 that omitted the question assessing suicidality. Most questions within the Full Version were required in order to be submitted, but participation was optional each day it was received.

Participants received either the Short or Full Version of the daily survey at 08:00 in their local time zone every day of the assessment period from March 21, 2020 - May 20, 2020. After May 20th, we discontinued the Short Version of the survey, but continued to send the Full Version of the survey 2 days/week from May 21, 2020 - June 23, 2020. Participants that enrolled in the study after June 23, 2020 only received the Full Version of the survey for the initial three days following completion of the demographic survey.

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