This trial is active, not recruiting.

Conditions sleep disorders, cerebrovascular disorders, cardiovascular disease, neurologic disorders, mood disorders
Sponsor University of Wisconsin, Madison
Collaborator National Heart, Lung, and Blood Institute (NHLBI)
Start date April 1999
End date April 2014
Trial size 1545 participants
Trial identifier NCT00005557, 2012-0084, R01HL062252


To characterize the natural history and biologic spectrum of sleep disordered breathing (SDB) and other sleep problems and disorders, and test hypotheses regarding the causes and consequences of SDB and other sleep problems and disorders.

United States No locations recruiting
Other countries No locations recruiting

Study Design

Observational model cohort
Time perspective prospective

Primary Outcomes

sleep disorders and problems, cardiovascular and cognitive outcomes
time frame: measured at each study visit

Secondary Outcomes

cardiovascular outcomes
time frame: measured at each study visit

Eligibility Criteria

Male or female participants at least 30 years old.

Inclusion criteria: - Employee of one of the 4 Wisconsin state agencies - Age 30-60 in 1988 Exclusion criteria: - Current pregnancy - Unstable or decompensated cardiopulmonary disease - Airway cancer - Recent upper respiratory surgery

Additional Information

Official title Epidemiology of Sleep-Disordered Breathing in Adults
Principal investigator Paul E Peppard, PhD
Description BACKGROUND: Recent research has shown that sleep disordered breathing (SDB) is much more common than previously thought. While it is known that in clinic samples, SDB is associated with hypertension, cardiovascular disease and mortality, little is known about the natural history of this disorder, particularly in the general population, nor about the causal role of known risk factors. The knowledge obtained from the results of this study will help advance the field of sleep disorders medicine. Information about longitudinal effects and causal relationships may be applied to clinical situations, thus reducing the morbidity and mortality associated with this disorder. DESIGN NARRATIVE: In this longitudinal study, follow-up polysomnography and other protocols are conducted on an established cohort of men and women (age 30-60 years at the time of initial recruitment in 1989), currently enrolled in the Wisconsin Sleep Cohort Study. The study aims to : 1) describe the natural history of SDB across middle and older age; 2) investigate associations of SDB with early and intermediate markers of cardiovascular dysfunction, damage, and cardiovascular disease; 3) investigate the longitudinal association of SDB in accelerated cognitive decline; 4) investigate the association of SDB and adverse sleep characteristics with age-related risk factors and outcomes.
Trial information was received from ClinicalTrials.gov and was last updated in December 2012.
Information provided to ClinicalTrials.gov by University of Wisconsin, Madison.