Related Variables
| oai4p | Obstructive Apnea Index >= 4% - number of [obstructive apneas with >= 4% oxygen desaturation] per hour of sleep | Measurements/Polysomnography/Respiratory Events/Indexes | |
| 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 |
Measurements/Polysomnography/Respiratory Events/Indexes | |
| rdi4ps | Overall Respiratory Disturbance Index (RDI) (Supine) at >=4% oxygen desaturation | Measurements/Polysomnography/Respiratory Events/Indexes | |
| rdinr4p | Overall Respiratory Disturbance Index (RDI) (Non-rapid eye movement sleep (NREM)) at >=4% oxygen desaturation | Measurements/Polysomnography/Respiratory Events/Indexes |