Qualitative Assessment of the Work-Sleep Relationship
Public ClinicalTrials.gov record NCT03389828. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Background: Sleep that does not last long and is low-quality is tied to a range of serious health issues. These range from obesity to early death. Research has shown that black people who are professionals or managers are more likely to have this kind of sleep than their white counterparts. Black people are also at higher risk than whites for health problems caused by insufficient sleep. Researchers want to learn more about why these differences exist. Objective: To study reasons for racial differences in the work-sleep relationship. Eligibility: Adults at least 25 years old who: * Are non-Hispanic black or non-Hispanic white * Are employed and work 38 or more hours a week * Live around Raleigh-Durham-Chapel Hill, NC, or Washington, DC Design: Participants will be screened with questions. They will give sociodemographic data like job title, annual income level, and gender. They will give their contact information. Participants will have 1 study visit. They will be in a closed, private conference room. They will join a focus group. The focus groups will be organized by to race, gender, and occupational class. Participants will give informed consent before the focus group begins. During the focus group, participants will be asked about their perceptions of health in general, and their typical work day. They will be asked about sleep. Participants will also fill out a short questionnaire about their job and sleep habits. Focus groups will be audio recorded. The entire session will last 90 to 120 minutes.
Study identification
- NCT ID
- NCT03389828
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 263 participants
Conditions and interventions
Conditions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 25 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- May 7, 2018
- Primary completion
- Sep 27, 2020
- Completion
- Sep 27, 2020
- Last update posted
- May 28, 2026
2018 – 2020
United States locations
- U.S. sites
- 2
- U.S. states
- 2
- U.S. cities
- 2
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Social and Scientific Systems, Inc. | Silver Spring | Maryland | 20910 | — |
| Social and Scientific Systems, Inc. | Durham | North Carolina | 27703 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT03389828, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 28, 2026 · Synced Sep 6, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT03389828 live on ClinicalTrials.gov.