Related Variables
| ahi_a0h3 | Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_a0h3a | Apnea-Hypopnea Index (AHI) >= 3% - number of [all apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_a0h4 | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_a0h4a | Apnea-Hypopnea Index (AHI) >= 4% - number of [all apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h3 | Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h3a | Obstructive Apnea-Hypopnea Index (AHI) >= 3% - number of [obstructive apneas] and [hypopneas with >=3% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h4 | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| ahi_o0h4a | Obstructive Apnea-Hypopnea Index (AHI) >= 4% - number of [obstructive apneas] and [hypopneas with >=4% oxygen desaturation or arousal] per hour of sleep | Sleep/Polysomnography/Respiratory Events/Indexes | |
| cent_obs_ratio | Central/Obstructive Apnea ratio at all desaturations | Sleep/Polysomnography/Respiratory Events/Indexes | |
| oahi3 |
Obstructive apnea hypopnea (>=3% desaturation) index
{[(total number of obstructive apneas) + (total number of hypopneas associated with >= 3% desaturation)] / (hours of sleep)} |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| oahi4 |
Obstructive apnea hypopnea (>=4% desaturation) index
{[(total number of obstructive apneas) + (total number of hypopneas associated with >= 4% desaturation)] / (hours of sleep)} |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| oai0p |
Obstructive apnea index (all obstructives with all desaturations)
[(total number of obstructive apneas associated with all desaturations) / (hours of sleep)]. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| omahi3 |
Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal) no centrals
{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| omahi3o |
Non-supine Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| omahi3r |
Rapid eye movement sleep (REM) Childhood Adenotonsillectomy Trial (CHAT) Apnea-Hypopnea Index (AHI) (obstructive apneas all desaturations, mixed apneas all desaturations, plus hypopneas with >=3% or arousal)
{[(total number of obstructive apneas) + (total number of mixed apneas) + (total number of hypopneas associated with >= 3% desaturation or arousal)] / (hours of sleep)}. will be missing if Total Sleep Time (TST) is 0. |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| omai0p | Childhood Adenotonsillectomy Trial (CHAT) OMAI (obstructive/mixed apnea index all desaturations) no centrals | Sleep/Polysomnography/Respiratory Events/Indexes | |
| rdim0p |
Overall Respiratory Disturbance Index (RDI) at 0% desaturation
[(total number of apneas and hypopneas) / (hours of sleep)] |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| rdim0pns |
Overall non-supine Respiratory Disturbance Index (RDI) at 0% desaturation
Non-supine Respiratory Disturbance Index (RDI) at all desaturations [(total number of apneas and hypopneas in non-supine body position) / (hours of sleep)] |
Sleep/Polysomnography/Respiratory Events/Indexes | |
| rdimrem0p |
Overall rapid eye movement sleep (REM) Respiratory Disturbance Index (RDI) at 0% desaturation
[(total number of apneas and hypopneas in rapid eye movement sleep (REM)) / (hours of rapid eye movement sleep (REM))] |
Sleep/Polysomnography/Respiratory Events/Indexes |