Table 2.

Weekly surveys.

Subject/topic	Survey instrument
Demographics	Race, gender, and campus activities
Sleep (habits, environment, and circadian preference)	Sleep/wake behavior problems Use of sleep aides (medications, music, and blinders; adapted from National Sleep Foundation [30]) Sleep quality (Patient-Reported Outcomes Measurement Survey (PROMIS) Sleep Practices and Sleep Disturbance) and daytime sleepiness (PROMIS SRI) [31,32] Circadian preference (Morningness-Eveningness Reduced Questionnaire [33]) Physical environment/number of roommates
Mental health	Depression (Center for Epidemiologic Studies Depression scale) [34] Stress (Cohen’s Perceived Stress Scale [35])
Nutrition (habits and knowledge)	Nutrition knowledge and habits (adapted from [36]) Caffeine intake [37]
General health status	General physical/mental health status [38] Reported number of absences owing to sickness Reported number of visits to student health
Academic schedule/performance	Intended major/minor Courses/schedule Academic performance (GPA) Average hours per week for campus activities, work study, and/or employment
Physical activity	Physical activity habits (adapted from [36]) Participation in campus programs
Experience with wearables and apps	Use of sleep tools/alerts/tracking Experience with wearables and health-related apps