2018 Intern Health Study Micro-randomized Trial
- Conditions
- SleepDepressionMoodPhysical Activity
- Registration Number
- NCT03972293
- Lead Sponsor
- University of Michigan
- Brief Summary
The aim of this trial is to evaluate the efficacy of an intervention (delivered through a smartphone) for improving the mood, physical activity, and sleep of medical interns.
- Detailed Description
Due to their high stress workloads, medical interns suffer from depression at higher rates than the general population. Interns also tend to have lower sleep and decreased physical activity. The goal of this trial is to evaluate the efficacy of a mobile health intervention intending to help improve the mental health of medical interns. The intervention sends mobile phone notifications which aim to help interns improve their mood, maintain physical activity, and obtain adequate sleep during their internship year.
The primary aim of the study is to evaluate how notifications affect participants' weekly mood, as measured through a daily one question mood survey. The second primary aim of the study is to evaluate how notifications affect participants' long-term mental health, as measured by the Patient Health Questionnaire. The first secondary aim is to evaluate how mood notifications affect participants' weekly mood. The second secondary aim is to evaluate how activity notifications affect participants' weekly step count. The third secondary aim is to evaluate how sleep notifications affect participants' weekly sleep duration. In order to better optimize notification delivery, the final aim (exploratory) is to understand moderators of these effects. Moderators of interest are previous week's mood, previous week's step count, previous week's sleep duration, study week, sex, previous history of depression, and baseline neuroticism.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 2134
- Medical intern during the 2018-2019 internship year
- iPhone user
- Affiliated with one of 47 recruitment institutions
- Downloaded app, completed consent, and filled out baseline survey prior to June 25th 2018
-None
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Patient Health Questionnaire-9 (PHQ-9) 4 months Four months into the study, all participants complete the Patient Health Questionnaire 9. High scores on the PHQ-9 correspond to a larger number of depressive symptoms.
PHQ-9 scores are compared between the two arms: receive notifications vs do not receive notifications.Average daily mood 7 days Through the mobile app, participants enter a mood score (scale 1-10) every day of the study. 1 corresponds to lowest mood and 10 corresponds to highest mood
For interns randomized to arm 1, average daily moods scores on weeks when a specific category of notification is sent are compared to mood scores on weeks when no notifications are sent.
- Secondary Outcome Measures
Name Time Method Average nightly sleep duration 7 days Participant's nightly sleep duration (in minutes) is recorded through a Fitbit. High sleep duration is considered a positive outcome.
For interns randomized to arm 1, nightly sleep duration on weeks when sleep notifications are sent are compared to sleep duration on weeks when no notifications are sent.Average daily step count 7 days Participant's daily step counts are recorded through a Fitbit. High step counts are considered a positive outcome as it indicates more physical activity.
For interns randomized to arm 1, average daily step counts on weeks when activity notifications are sent are compared to step counts on weeks when no notifications are sent.
Trial Locations
- Locations (1)
University of Michigan
🇺🇸Ann Arbor, Michigan, United States
University of Michigan🇺🇸Ann Arbor, Michigan, United States