Related Variables
| event | Event type | Clinical Data/Incident Outcomes/Cardiovascular Diseases | |
| oai4p | Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation] per hour of sleep | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi4p |
Overall Respiratory Disturbance Index (RDI) at >=4% oxygen desaturation
Ratio of the count of all apneas (central and obstructive) and hypopneas associated with at least a >=4% oxygen desaturation to the total sleep time expressed in hours |
Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdi4pns | Overall Respiratory Disturbance Index (RDI) (non-Supine) at >=4% oxygen desaturation | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| rdirem4p | Overall Respiratory Disturbance Index (RDI) (Rapid eye movement sleep (REM)) at >=4% oxygen desaturation | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices |