Completed OBSERVATIONAL NCT00607204

Examining the Biological Factors That Affect Sleep Duration

Neurobiology of Individual Differences in Sleep Duration

Sponsor: Brigham and Women's Hospital

Conditions Circadian Rhythm Cognitive Performance Sleep

Updated 10 times since 2017 Last updated: Jul 30, 2013 Started: Oct 31, 2005 Primary completion: Nov 30, 2011 Completion: Nov 30, 2011

This information is for research purposes only and is not medical advice. Consult a healthcare provider before making any medical decision.

A observational or N/A phase clinical study on Circadian Rhythm and Cognitive Performance, this trial is completed. The trial is conducted by Brigham and Women's Hospital and has accumulated 10 data snapshots since 2005. Longitudinal tracking of this trial contributes to a broader understanding of treatment development timelines.

Status Flow

Change History

10 versions recorded

Sep 2024 — Present [monthly]

Completed
Jul 2024 — Sep 2024 [monthly]

Completed
Dec 2021 — Jul 2024 [monthly]

Completed
Jan 2021 — Dec 2021 [monthly]

Completed
Nov 2020 — Jan 2021 [monthly]

Completed

▶ Show 5 earlier versions

Jun 2018 — Nov 2020 [monthly]

Completed
May 2018 — Jun 2018 [monthly]

Completed
Apr 2018 — May 2018 [monthly]

Completed

Phase: NA → None
Aug 2017 — Apr 2018 [monthly]

Completed NA
Jan 2017 — Aug 2017 [monthly]

Completed NA

First recorded

Oct 2005

Trial started

Per CT.gov start date — pre-dates our first snapshot

Eligibility Summary

No eligibility information available.

Contact Information

Sponsor contact:

Brigham and Women's Hospital
National Center for Research Resources (NCRR)
National Heart, Lung, and Blood Institute (NHLBI)

Data source: Brigham and Women's Hospital

For direct contact, visit the study record on ClinicalTrials.gov .

Study Locations

• Boston, United States