Multi-scale Modeling of Sleep Behaviors in Social Networks

Completed

• Conditions: Healthy Volunteers
• Interventions: Other: No intervention. Observation only

• Registration Number: NCT02846077
• Lead Sponsor: Brigham and Women's Hospital

Brief Summary

The project is designed to document in college undergraduates the relationships among sleep/wake timing and duration, use of mobile phones and other electronic devices, food timing and content, self-reported mood and physiological measures.

Detailed Description

College undergraduates are studied in cohorts of \~ 50 in fall or spring semesters. They complete diaries once in the morning and once in the evening about sleep/wake timing, timing of social and school activities, and mood. They wear physiological sensors. They install (1) an application on their mobile phone that tracks timing, duration and de-identified sender/recipient of phone calls and text messages, use of internet or apps (but not the content or names of those internet sites and apps) and (2) meal content and timing. They also spend at least one overnight session providing saliva samples for later assay for hormones.

Study Timeline

• Study Start: 2013-09
• Study First Submitted: 2016-07-15
• Study First Submitted QC: 2016-07-24
• Study First Posted: 2016-07-27
• Primary Completion: 2018-06
• Study Completion: 2018-06
• Status Verified: 2018-07
• Last Update Submitted: 2018-07-09
• Last Update Posted: 2018-07-11

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 729

Inclusion Criteria

• undergraduate at institution at which we have permission to perform study
• owning a mobile device on which the phone app can be installed
• ability to wear the wrist-worn sensors

Exclusion Criteria

• no travel outside one time zone starting approximately 2 weeks before monitoring begins through end of approximately one month of monitoring.
• participation in a prior group studied

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
College students	No intervention. Observation only	College students will be monitored and will complete online surveys, install apps on their mobile phones, wear physiological sensors and provide saliva samples for later assay.

Primary Outcome Measures

Name	Time	Method
Timing of sleep and wake	Approximately one month	Timing of self-reported sleep onset and wake onset
Timing of phone use (e.g., mobile phone calls, text messages, applications and internet use)	Approximately one month	Timing of phone use (e.g, mobile phone calls, text messages, applications and internet use)

Secondary Outcome Measures

Name	Time	Method
Light exposure levels	approximately one month	Light exposure levels collected every minute using a wrist-worn device
Mood	Approximately one month	Self-reported mood using a linear non-numeric scale
Activity levels	approximately one month	Activity levels collected every minute using a wrist-worn device
Circadian phase	one day	Calculated time of melatonin phase as a marker of circadian rhythms
Food choice	approximately one month	Content of food
Electrodermal activity	approximately one month	Electrodermal activity as measured using a wrist-worn device
Timing of meals	approximately one month	Time meals are eaten

Trial Locations

Locations (1)

Brigham and Women's Hospital; 🇺🇸 Boston, Massachusetts, United States