Related Variables
| event | Event type | Clinical Data/Incident Outcomes/Cardiovascular Diseases | |
| ahi_a0h4 | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_c0h4 | Central Apnea-Hypopnea Index (AHI) >= 4% - number of [central apneas] and [hypopneas with >= 4% oxygen desaturation] per hour of sleep | Sleep Monitoring/Polysomnography/Apnea-Hypopnea Indices | |
| ahi_o0h4 | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas 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 | |
| rdi4ps | Overall Respiratory Disturbance Index (RDI) (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 |