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Age-related Prevalence of Sleep Respiratory Disturbances

This study has been completed.
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI) Identifier:
First received: May 25, 2000
Last updated: February 26, 2016
Last verified: March 2005
To determine the prevalence and longitudinal course of sleep apnea among men and women and to examine the associations of apnea, oxygen desaturation, snoring, high blood pressure, and other biomedical correlates.

Lung Diseases
Heart Diseases
Sleep Apnea Syndromes

Study Type: Observational

Resource links provided by NLM:

Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: April 1990
Study Completion Date: June 1997
Detailed Description:


Sleep apnea is characterized by repetitive cessations of respiration during sleep with consequent decreases in arterial oxygen saturation. Sleep apnea can be caused by upper airway obstruction or by central nervous system failure to sufficiently excite the diaphragm and accessory respiratory muscles. However, in most cases, both processes are involved. Hypopneas, in which airflow is significantly compromised without complete cessations of respiratory flow, and snoring are often found in association with apneas. Both apneas and hypopneas cause repetitive disruptions of sleep, consequent daytime somnolence, and complex cardio-respiratory disturbances.


The study was longitudinal in design. A stratified random sample of adults in San Diego was used to examine risk factors in the prevalence of sleep respiratory disturbances. A structured random sample was selected by random digit telephone dialing. Subjects were studied in their homes. Some were followed yearly during the project. Each volunteer gave a brief sleep history and medical review, including blood pressure measurement, the National Interview Survey, And Quality of Well-being Scale. Blood oxygen saturation, pulse rate, snoring, and sleep duration were recorded for three nights. State-of-the-art computerized pulse oximeters and microprocessor-based activity/light monitors were used. Subjects found to have the most severe sleep respiratory disturbances underwent laboratory polysomnograms to add descriptive data and to validate the survey methodology. The prevalence of respiratory disturbances in sleep was analyzed as a function of age and sex. Associations with several aspects of morbidity were determined. The longitudinal course of respiratory disturbances in sleep were examined.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.


Ages Eligible for Study:   up to 100 Years   (Child, Adult, Senior)
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No
No eligibility criteria
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Please refer to this study by its identifier: NCT00005297

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Daniel Kripke University of California, San Diego
  More Information

Publications: Identifier: NCT00005297     History of Changes
Other Study ID Numbers: 2020  R01HL040930 
Study First Received: May 25, 2000
Last Updated: February 26, 2016
Health Authority: United States: Federal Government

Additional relevant MeSH terms:
Heart Diseases
Lung Diseases
Sleep Apnea Syndromes
Cardiovascular Diseases
Respiratory Tract Diseases
Respiration Disorders
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases processed this record on October 26, 2016