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CompletedNCT05436145IHSUpdated Jul 3, 2024

Intern Health Study 2022 and 2023

An interventional study of Intern Health Study behavioral change mobile notification in Depression, Mood and Sleep, sponsored by University of Michigan. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-07-03.

Sponsored by University of Michigan · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
2,562
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study 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.

Read the 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.

02

Conditions studied

  • Depression
  • Mood
  • Sleep
  • Physical Activity
03

In context

Depression

8,245 studies on the registry are indexed under Depression; 1,641 are open to participants now.

This study's enrollment of 2,562 is above the median of 84 across 6,869 interventional studies indexed under Depression.

Browse Depression studies →

Lead sponsor

University of Michigan is the lead sponsor of 1,503 studies on the registry; 189 are open to participants now.

Of its 167 completed or terminated interventional studies of FDA-regulated products, 132 (79%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Medical intern during the 2022-2023 or 2023-2024 internship years
  • iPhone or Android phone user
  • Logged into the Intern Health Study mobile app, completed consent, and filled out baseline survey by June 30 prior to the start of intern year

Exclusion criteria

Exclusion Criteria:

  • None
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
2,562 participants (actual)

Study arms

  • Experimental
    Within-participant micro-randomization

    Each day in the study, with probability .5 for each, a participant is randomized to receive a notification that day or no notification that day. If a participant is assigned to receive a notification that day, 1 message set will be randomly selected from a pool of 60 message sets. There are 2 types of message sets: 1) Support and 2) Consequences. If a participant is assigned to receive a Support message set, they will be randomized to receive either the Emotional or Practical Support version. If a participant is assigned to receive a Consequences message set, they will be randomized to receive either the Gain Framed or Loss Framed version.

    Behavioral: Intern Health Study behavioral change mobile notification

Interventions

  • BehavioralIntern Health Study behavioral change mobile notification

    The study's mobile app will be used to deliver intervention notifications. The intervention notifications appear on the participant's phone lock screen. The notifications include 3 categories: mood notifications, activity notifications, sleep notifications. Mood notifications aim to increase the participant's mood. Activity notifications aim to increase the participant's physical activity. Sleep notifications aim to increase the participant's sleep duration. All notifications are categorized as one of two types of message sets: 1) Support, or 2) Consequences. Within each message set the core content is adapted to provide either 1) Emotional Support or Practical Support, or 2) Gain or Loss-Framed Consequences.

06

What researchers measure

Primary outcomes

  1. Average daily mood

    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.

    Time frame: Daily, through study completion at the end of intern year (1 year)

  2. Average daily step count

    Participant's daily step counts are recorded through a Fitbit or Apple Watch. High step counts are considered a positive outcome as it indicates more physical activity.

    Time frame: Daily, through study completion at the end of intern year (1 year)

  3. Average nightly sleep duration

    Participant's nightly sleep duration (in minutes) is recorded through a Fitbit or Apple Watch. High sleep duration is considered a positive outcome.

    Time frame: Daily, through study completion at the end of intern year (1 year)

  4. Patient Health Questionnaire-9 (PHQ-9)

    Prior to the start of the intervention and at quarterly intervals throughout internship year, all participants complete the Patient Health Questionnaire 9. High scores on the PHQ-9 correspond to a larger number of depressive symptoms.

    Time frame: Quarterly (every 3 months for 1 year)

07

Study locations

1 site
  • University of Michigan
    Ann Arbor, Michigan 48109, United States
08

References and documents

Individual participant data

Plan to share: Yes — De-identified genomic and survey information (baseline survey, plus quarterly survey which contains the PHQ-9) will be shared with the National Institute for Mental Health (NIMH).

Supporting information: Informed consent form

Time frame: Data will be made available 12 months after the end of the trial. It will be made available indefinitely after that date.

Access criteria: The data will be shared directly with the NIMH. NIMH will apply their criteria for qualified researchers and analyses.

Data sharing details ↗ · www.openicpsr.org

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Jul 2022 to primary completion in Jun 2024, 23 months.

Of 3,016 non-industry interventional studies with no phase under Depression, half reached primary completion within 22 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 43. This study's 23 months is close to that.

Counting every sponsor, half of 3,112 studies reached it within 22 months; a quarter within 10 and three quarters within 43.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 21, 2022
First posted
Jun 28, 2022
StartActual
Jul 1, 2022
Primary completionActual
Jun 30, 2024
CompletionActual
Jun 30, 2024
Last update
Jul 3, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 3, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05436145
Responsible party
Srijan Sen (Research Professor, University of Michigan) — Principal investigator
First posted
Jun 28, 2022
Start date
Jul 1, 2022
Primary completion
Jun 30, 2024
Completion
Jun 30, 2024
Last update
Jul 3, 2024

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2024. You cannot join it, but the record below documents what was studied.

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