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Why do black professionals sleep worse? study seeks answers

NCT ID NCT03389828

Knowledge-focused Sponsor: National Institute of Environmental Health Sciences (NIEHS) Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at why Black professionals and managers often have shorter, lower-quality sleep than their white coworkers. Researchers held focus groups with 263 Black and white adults who work full-time. They asked about work, sleep habits, and health to find patterns that might explain these differences.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

263 people

The number who actually took part.

Started

May 2018

Finished

Sep 2020

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Community sample - residents from Durham, NC and the surrounding areas as well as residents from Silver Spring, MD and the surrounding areas.

Ages

25 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

* INCLUSION CRITERIA: * Non-Hispanic Black or non-Hispanic White * Female or Male * 25 years of age or older * Employed (38 plus hours/week) * Residing in the area around Raleigh-Durham-Chapel Hill, NC or Silver Spring, MD EXCLUSION CRITERIA: * Born outside the continental United States * Not fluent in English * Unwilling to provide answers to all screening questions * Unwilling to provide informed consent

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Conditions

The condition(s) this trial relates to.

Behavior

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Sleep health

Contacts and locations

Locations

  • Social and Scientific Systems, Inc.

    Silver Spring, Maryland, 20910, United States

  • Social and Scientific Systems, Inc.

    Durham, North Carolina, 27703, United States

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