NCT04205370

Brief Summary

The researchers would like to know how long pregnant women spend in different positions during the night - and how often women change positions - across pregnancy. The researchers also want to see if the sleep monitor is able to improve sleep behaviors

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
500

participants targeted

Target at P75+ for not_applicable

Timeline
7mo left

Started Jan 2020

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress92%
Jan 2020Dec 2026

First Submitted

Initial submission to the registry

December 17, 2019

Completed
2 days until next milestone

First Posted

Study publicly available on registry

December 19, 2019

Completed
1 month until next milestone

Study Start

First participant enrolled

January 22, 2020

Completed
6.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

April 16, 2025

Status Verified

April 1, 2025

Enrollment Period

6.9 years

First QC Date

December 17, 2019

Last Update Submit

April 11, 2025

Conditions

Outcome Measures

Primary Outcomes (1)

  • Proportion of sleep time spent in the supine position as measured by the Pregnancy Coach

    Will be conducted using the naturalistic arm (deactivated device). Simple descriptive statistics to report the average number of minutes and the average proportion of supine sleep per week.

    Until delivery, approximately 12 weeks

Secondary Outcomes (3)

  • Proportion of sleep time spent with objective snoring as indicated by the Pregnancy Coach

    Until delivery, approximately 12 weeks

  • Proportion of participants where their 'going to sleep' position was the same as their dominant sleep position

    Until delivery, approximately 12 weeks

  • Percentage of sleep position changes following alert from Pregnancy Coach

    Until delivery, approximately 12 weeks

Study Arms (2)

Deactivated device

ACTIVE COMPARATOR

Wear deactivated pregnancy coach device for the remainder of pregnancy.

Device: Deactivated Pregnancy Coach

Active device

EXPERIMENTAL

Wear active device for remainder of pregnancy (including 3 day run-in period)

Device: Active Pregnancy Coach

Interventions

Naturalistic monitoring of their typical sleep patterns and behaviors

Deactivated device

The Pregnancy Coach will begin to deliver alerts when supine sleep is detected. Sleep metrics will be visible on the smartphone app.

Active device

Eligibility Criteria

Age18 Years+
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • At least 28 weeks pregnant
  • Receiving pre-natal care at Michigan Medicine
  • Have either and Android or iPhone smartphone

You may not qualify if:

  • Less then 28 weeks pregnant
  • Receiving pre-natal care external to Michigan Medicine
  • Does not poses a smartphone

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Michigan

Ann Arbor, Michigan, 48109, United States

RECRUITING

MeSH Terms

Conditions

Pregnancy Complications

Condition Hierarchy (Ancestors)

Female Urogenital Diseases and Pregnancy ComplicationsUrogenital Diseases

Study Officials

  • Louise O'Brien, PhD

    University of Michigan

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Louise O'Brien, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
OTHER
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Research Associate Professor, Neurology, Research Associate Professor, Obstetrics and Gynecology, Medical School and Associate Research Scientist, Dentistry, Department of Oral and Maxillofacial Surgery, School of Dentistry

Study Record Dates

First Submitted

December 17, 2019

First Posted

December 19, 2019

Study Start

January 22, 2020

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

December 1, 2026

Last Updated

April 16, 2025

Record last verified: 2025-04

Data Sharing

IPD Sharing
Will not share

The study team does not have plans to actively share data, however, they are open to collaboration following contact with the investigator.

Locations